Round 12- Marquez fighting as if he believes he's leading in the fight. Pacquiao staying cautious early on, and probably needs the knockout to win. Left hand lands for Pacquiao inside. Quick flurries by both boxers. Marquez walks into a Pacquiao punch. Marquez landsa body shot and Pacquiao misses. Referee calls timeout for Pacquiao to get mouthpiece back in. Marquez stays away for the remainder of the round. 10-9 Pacquiao

My Scorecard: 116-112 Marquez

Official Decision: 114-114, 116-112, 115-113 Pacquiao by majority decision

In the main event, Manny Pacquiao (53-3-2, 38 KO) will battle former foe Juan Manuel Marquez (53-5-1, 39 KO) for the third time, and it may be the most defining moment of each boxers' career.

Pacquiao has achieved more than any active boxer, and that includes being the first eight-division world champion and the first to win a lineal championship in four different weight classes.

Their first fight between the two saw Marquez getting dropped three times in the first round, but he fought back to earn a draw in one of 2004's most exciting fights.

The 2008 rematch saw Marquez getting knocked down again, and he would lose a split-decision that many had thought he deserved to win.

Manny Pacquiao vs. Juan Manuel Marquez II

Round 10- Both being cautious early in the 10th. Marquez opens up a minute into the round, and it's Pacquiao lands a hook. More exchanges inside, and Marquez lands. Marquez goes to the body. A minute to go in the round. Marquez jabs and sneaks a right hand through that misses. Short right hand lands for Pacquiao.  10-9 Pacquiao

Round 11- Big right hand misses for Pacquiao. Marquez gets caught with a left hand. Manny moves forward and takes a right hand as he backs away. Marquez trying to land his uppercut but coming up short. Right hand counter lands for Manny. Marquez misses with his right. Pacquiao moves forward and lands a right. 10-9 Pacquiao

In the main event, Manny Pacquiao (53-3-2, 38 KO) will battle former foe Juan Manuel Marquez (53-5-1, 39 KO) for the third time, and it may be the most defining moment of each boxers' career.

Pacquiao has achieved more than any active boxer, and that includes being the first eight-division world champion and the first to win a lineal championship in four different weight classes.

Their first fight between the two saw Marquez getting dropped three times in the first round, but he fought back to earn a draw in one of 2004's most exciting fights.

The 2008 rematch saw Marquez getting knocked down again, and he would lose a split-decision that many had thought he deserved to win.

Manny Pacquiao vs. Juan Manuel Marquez III

Round 7- Hard right hand stuns Pacquiao a minute into the round. Both boxers exchange, but it's Marquez who counters more effectively. Marquez goes low, and they touch gloves. Pacquiao beginning to inch closer. Marquez lands a body shot. Right hand lands again for Marquez. Wild exchanges late in the round. 10-9 Marquez

Round 8- Marquez lands a short right hand as Pacquiao moves to the ropes. Marquez goes to the body again. Pacquiao lands a jab. Pacquiao goes to the body. First clinch of the fight, and the boxers break. Right hand lands for Marquez. Right hook catches Marquez as he ducks and moves away. Pacquiao leaps forward and lands a left. Big flurry inside by Pacquiao. Uppercut misses for Marquez. Left hand lands for Pacquiao. 10-9 Marquez

Round 9- Left hand and right miss for Marquez. Marquez lands a shot on the back of Pacquiao's head. Pacquiao avoids a left. Marquez moves forward and takes a short right hand by Pacquiao. Pacquiao lands a right hook. Marquez opens up with a combination. Uppercut misses for Pacquiao. Wild exchanges inside, and Marquez gets the better of it. 10-9 Marquez

In the main event, Manny Pacquiao (53-3-2, 38 KO) will battle former foe Juan Manuel Marquez (53-5-1, 39 KO) for the third time, and it may be the most defining moment of each boxers' career.

Pacquiao has achieved more than any active boxer, and that includes being the first eight-division world champion and the first to win a lineal championship in four different weight classes.

Their first fight between the two saw Marquez getting dropped three times in the first round, but he fought back to earn a draw in one of 2004's most exciting fights.

The 2008 rematch saw Marquez getting knocked down again, and he would lose a split-decision that many had thought he deserved to win.

Manny Pacquiao vs. Juan Manuel Marquez III

Round 4- Marquez opens up this round. Pacquiao covering up and throws a left hand. Another left hand, and Marquez fires back. Marquez misses with a right. Right hand lands for Marquez. Right hand glances off Pacquiao. Boxers clash heads again. Left hand lands for Pacquiao. Marquez boxing and looking great. Right hand lands for Marquez. 10-9 Marquez

Round 5- Marquez throws a three-punch combo and lands a punch to the body. Pacquiao comes back with a couple jabs, all blocked by Marquez. Marquez begins to back up as Pacquiao comes forward. Marquez goes back to the body. Right hooks miss for Pacquiao, and Marquez counters. Stiff jab lands for Marquez. Marquez lands with 40 seconds to go. Marquez goes to the body. Pacquiao misses with a right hand. Hard right hand lands for Marquez. 10-9 Marquez

Round 6- Both boxers jabbing through first minute of the round. Both go to the body but miss. Marquez goes to the body of Pacquiao, and Pacquiao drops his hands momentarily to shake it off. Two punches land on body of Pacquiao. Sharp counters land for both boxers. Left hand lands for Pacquiao. Two right hands land for Marquez. Close round. 10-9 Pacquiao

In the main event, Manny Pacquiao (53-3-2, 38 KO) will battle former foe Juan Manuel Marquez (53-5-1, 39 KO) for the third time, and it may be the most defining moment of each boxers' career.

Pacquiao has achieved more than any active boxer, and that includes being the first eight-division world champion and the first to win a lineal championship in four different weight classes.

Their first fight between the two saw Marquez getting dropped three times in the first round, but he fought back to earn a draw in one of 2004's most exciting fights.

The 2008 rematch saw Marquez getting knocked down again, and he would lose a split-decision that many had thought he deserved to win.

Manny Pacquiao vs. Juan Manuel Marquez III

Round 1- Pacquiao opens up the fight with a jab. Marquez goes to the body with a right hand. Pacquiao avoids a couple left hands from Marquez. Pacquiao waiting and jabbing. Pacquiao is looking incredibly fast with his left hand. Marquez throws a combination to the body. Pacquiao misses as Marquez ducks. Pacquiao’s southpaw jab coming up short and being blocked by Marquez. Right hand misses for Marquez. Marquez goes back to the body and hits Manny low. 10-9 Marquez

Round 2- Pacquiao pressing forward and letting his right hand go. Marquez throws his right hand to keep Pacquiao away. Pacquiao coming with the jab and goes to the body. Uppercut blocked by Pacquiao. Marquez goes to the body and lands a combination. Pacquiao goes to the body but takes a right hand in return. Pacquiao beginning to move in circles. Right hand glances off the top of Pacquiao's head. 10-9 Marquez

Round 3- Pacquiao the first to open up this round. Marquez's first punch is a jab. Uppercut thrown by Marquez. Pacquiao having trouble landing any clean blows. Pacquiao goes to the body and avoids a right hand from Marquez. Marquez comes back with a body shot and right hand. Headbutt, and boxers touch gloves. Marquez countering as Pacquiao comes in. Marquez lands a body shot. 30 seconds to go, and Pacquiao pressures Marquez. Marquez lands a left hand to the body. Right hand lands for Manny as the round ends. 10-9 Marquez

Many boxing fans called Timothy Bradley's bout against Joel Casamayor a mismatch, and that's just what it was after Bradley stopped the 40-year-old opponent in Round 8.

Over the course of the bout, Bradley scored three knockdowns over his opponent. Casamayor also received a point deduction in round three for headbutting.

Casamayor's corner threw in the towel after the end of the eigth round.

Bradley, who is the WBO light welterweight champion, extends his undefeated record to 28-0 with 11 knockouts while Casamayor falls to 38-6-1 with 22 knockouts.

In the main event, Manny Pacquiao (53-3-2, 38 KO) will battle former foe Juan Manuel Marquez (53-5-1, 39 KO) for the third time later tonight on HBO pay-per-view, and it may be the most defining moment of each boxers' career.

Pacquiao has achieved more than any active boxer, and that includes being the first eight-division world champion and the first to win a lineal championship in four different weight classes.

Their first fight between the two saw Marquez getting dropped three times in the first round, but he fought back to earn a draw in one of 2004's most exciting fights.

The 2008 rematch saw Marquez getting knocked down again, and he would lose a split-decision that many had thought he deserved to win.

In the second bout on tonight's HBO pay-per-view, Breidis Prescott (24-3, 19 KO) takes on Mike Alvarado (31-0, 22 KO) in a light welterweight matchup.

Prescott's biggest win came over Amir Khan, who he knocked out in under a minute of the first round in a 2008 bout.

Breidis Prescott vs. Mike Alvarado

Rounds 1-3

Round 1- Short break in action to fix tape on Alvarado's glove. Alvarado begins to move as Prescott stalks and jabs. High defense by Alvarado. Prescott throws a right hand and goes to the body with a flurry. Alvarado jabs to the body and covers up for Prescott's answer. Prescott throwing with big power early. Short little uppercut lands inside for Prescott, who begins to take consecutive jabs from Alvarado. Prescott throwing more than Alvarado. Sharp jabs being landed by Alvarado. Close round. 10-9 Prescott

Round 2- Alvarado comes out fast with the jab. Prescott answers with a jab of his own. Alvarado letting his guard down more to get Prescott to open up. Right hand lands for Prescott, who is more on the offensive. Alvarado staying cautious and less busier than Prescott. Left hand misses for Alvarado. Boxers clinch with a minute to go. Uppercut misses for Alvarado, who takes a jab for in return. Prescott fighting inside now and going head-to-head. Prescott sits on the ropes and takes an attack from Alvarado. 10-9 Prescott

Round 3- Alvarado momentarily switches to southpaw but goes back and begins to unload jabs. Alvarado’s guard down more, and Prescott gets warned for going to the body. Prescott staying more calm and letting Alvarado come forward with a right hand. Referee Jay Nady warns Prescott for going low again. Rounds ends with Prescott staying busy with body shots. 10-9 Prescott

Round 4- Prescott attacking early and often as Alvarado’s nose is bloody. Alvarado walking forward and receiving Prescott’s counters. Prescott staying active and dominating Alvarado in this round. 10-9 Prescott

Round 5- Alvarado pressing forward with his guard high and looking to land his left jab. Prescott moving backwards and going to the body and head. Alvarado’s face is still bloody and getting worse with time. Alvarado tries to break away from a clinch by throwing a punch but misses. Rounds ends with Prescott on the defensive. 10-9 Prescott

Round 6- Left hook glances off Prescott’s chin. Prescott using his jab and uppercut to keep Alvarado at bay. Alvarado’s left hand a lot lower now as he presses forward with it. Right hand lands for Alvarado, but an uppercut misses. Boxers trading uppercuts inside. Good exchanges by both boxers. Uppercuts landing for both. 10-9 Prescott

Round 7- Short break in action to fix tape on Alvarado’s glove. Alvarado coming forward and lands a right hand on Prescott’s chin. Prescott jabbing and takes another right hand. Alvarado really pressing forward, but Prescott using good defense to avoid the shots. Prescott 10-9

Round 8- Alvarado really coming forward and trying to land some power shots to establish his late-fight attack. Left jab working well for Alvarado this round as Prescott jumps forward. Prescott going back to the inside attack and landing some good uppercuts. Alvarado lands a good uppercut as well. Right hand misses for Alvarado. Alvarado lands a right hand late that rocks Prescott. 10-9 Alvarado

Round 9- Glancing blows landing early this round. Alvarado moving on his feet and using his jab. Prescott beginning to move and avoids any danger that Alvarado possesses late. Prescott keeping his distance from the more aggressive Alvarado. Prescott doubling up on the jab. Prescott 10-9

Round 10- Alvarado throwing his right hand early, and Prescott is on the move with the jab. Boxers fall into a clinch and break away quickly. Prescott dropping his left hand, and Alvarado attacks with a right. Uppercuts land for Alvarado, and Prescott goes down. Another uppercut lands, and Prescott is almost out. Prescott takes another uppercut to the face, and Jay Nady stops the fight!

Mike Alvarado wins by TKO in Round 10.

Manny Pacquiao vs. Juan Manuel Marquez Undercard Results

In a junior lightweight bout between Juan Carlos Burgos (28-1, 19 KO) and previously unbeaten boxer Luis Cruz (19-1, 15 KO), Burgos upset the odds and handed Cruz his first defeat after 10 rounds of junior lightweight action.

The scores were 97-93, 98-92 and 95-95 for Burgos.

In the main event, Manny Pacquiao (53-3-2, 38 KO) will battle former foe Juan Manuel Marquez (53-5-1, 39 KO) for the third time later tonight on HBO pay-per-view, and it may be the most defining moment of each boxers' career.

Pacquiao has achieved more than any active boxer, and that includes being the first eight-division world champion and the first to win a lineal championship in four different weight classes.

Their first fight between the two saw Marquez getting dropped three times in the first round, but he fought back to earn a draw in one of 2004's most exciting fights.

The 2008 rematch saw Marquez getting knocked down again, and he would lose a split-decision that many had thought he deserved to win.

At the weigh-ins on Friday, Filipino superstar Manny Pacquiao and Mexican rival Juan Manuel Marquez faced-off for the third time before their mega-fight, which takes place on HBO pay-per-view later tonight.

Their first fight saw Marquez getting dropped three times in the first round, but he fought back to earn a draw in one of 2004's most exciting fights.

The 2008 rematch saw Marquez getting knocked down again, and he would lose a split-decision that many had thought he deserved to win.

Now at 38, Marquez has decided to move up in weight to face Pacquiao at 144 pounds. Both weighed-in under the limit.

Current WBA and IBF light welterweight champion Amir Khan only has one blemish on his professional record, and it came against Breidis Prescott, who will be fighting Mike Alvarado later tonight on the undercard of the Manny Pacquiao vs. Juan Manuel Marquez pay-per-view.

Prescott entered the 2008 bout with a 19-0 record and stunned the boxing world when he stopped Khan less than a minute into the fight.

The Columbian boxer now sits at 24-3 with 19 knockouts. He is 3-3 in his last six fights, but has faced notable competition in Paul McCloskey, Kevin Mitchell and Humberto Toledo.

He will be taking on Alvarado, who is 31-0 with 22 knockouts. Since 2010, the 31-year-old has gone 5-0.

Manny Pacquiao and Juan Manuel Marquez are ready to battle for the third time later tonight, but the undercard is currently underway and featuring some of the up-and-comers in the sport.

All of tonight's undercard bouts can be watched at TopRank.com. The bouts include Dennis Laurente vs. Ayi Bruce, Jose Benavidez vs. Samuel Santana and Vic Pasillas vs. Jose Garcia.

The pay-per-view event can also be purchased at the site. Along with the Pacquiao/Marquez bout, three other bouts will be shown, including Timothy Bradley vs. Joel Casamayor, Luis Cruz vs. Juan Carlos Burgos and Mike Alvarado vs. Breidis Prescott.

Pacquiao vs. Marquez 1 (May 8, 2004)

Pacquiao's total punches landed/thrown: 148/639 for 23 percent

Marquez's total punches landed/thrown: 158/547 for 29 percent

Pacquiao's total power punches landed/thrown: 100/231

Marquez's total power punches landed/thrown: 122/339

Pacquiao vs. Marquez 2 (Mar. 15, 2008)

Pacquiao's total punches landed/thrown: 157/619 for 25 percent.

Marquez's total punches landed/thrown: 172/511 for 34 percent.

Pacquiao's total jabs landed/thrown: 43/314

Marquez's total jabs landed/thrown: 42/201

Pacquiao's total power punches landed/thrown: 114/305

Marquez's total power punches landed/thrown: 130/310

In the three fights that have gone the distance since his second fight with Marquez, Pacquiao has landed 944 punches and thrown 3027 for 30 percent.

In his two fights that have gone the distance since his second fight with Pacquiao, Marquez has landed 357 and thrown 1255 for 28 percent.

All stats from CompuBox.

Blake Dreisbach, Featured Columnist / 1-Time Prediction Contest Champion

I wouldn’t be shocked if Marquez won, but Pacquiao is on a roll right  now and has looked better against tougher opposition than Marquez as of  late. As far as styles go, I still think Pacquiao has an advantage in  being the quicker and more powerful boxer. Those two things alone will  carry Pacquiao through a 12-round battle with Marquez, but with no  questions being left this time around about who should have really won.  Pacquiao by unanimous decision (117-111 x3).

Dave Carlson Featured Columnist / 1-Time Prediction Contest Champion

These two always make great fights, and expect another one—but don’t  expect it to be as close as the last two. Marquez is fighting at the  highest weight of his career (144 is way closer to Pacquiao’s comfort  zone), and he is 38 years old.

Marquez deserves to be a top 5  pound-for-pound fighter, but deconstruct his resume since the last  Pacquiao fight and it’s not all that impressive: Wins over Casamayor,  Diaz, and Katsidis look less impressive now than they did at the time,  and other than that, Marquez has a win over a no-name, and a brutal loss  to Mayweather.

Pacquiao will be Pacquiao, and Marquez will be the  gutsy, talented, technical fighter we expect him to be. Neither guy will  knock out the other, but Marquez will go down at least once and  Pacquiao will win by a comfortable, conclusive margin. Pacquiao UD:  116-111, 115-112, 118-109

Read the rest of the predictions here. Manny Pacquiao vs. Juan Manuel Marquez: Official Bleacher Report Predictions

Mexican lightweight champion Juan Manuel Marquez (53-5-1, 39 KO) will look to get his first victory over his biggest rival, Manny Pacquiao (53-3-2, 38 KO), later tonight on HBO pay-per-view.

Marquez is a three-division world champion and has won eight world titles in three different boxing classes.

His wins include those over Juan Diaz, Joel Casamayor, Michael Katsidis, Rocky Juarez, and Marco Antonio Barrera.

The 38-year-old will be facing Pacquiao for the third time tonight. Their first fight saw Marquez getting dropped three times in the first round, but he fought back to earn a draw in one of 2004's most exciting fights.

The 2008 rematch saw him getting dropped again, and he would lose a split-decision that many had thought he deserved to win.

Manny Pacquiao (53-3-2, 38 KO) will battle former foe Juan Manuel Marquez (53-5-1, 39 KO) for the third time later tonight on HBO pay-per-view, and it may be the most defining moment of each boxers' career.

Pacquiao has achieved more than any active boxer, and that includes being the first eight-division world champion and the first to win a lineal championship in four different weight classees.

HBO's greatest hits of Pacquiao features him defeating all of his biggest opponents, including Marquez, Oscar De La Hoya, Joshua Clottey, Miguel Cotto, Ricky Hatton and Marco Antonio Barrera.

Those victories have helped him be named 2000's fighter of the decade as well as a three-time fighter of the year.