It's always fun looking back on a career of a fighter like Pacquiao because there are so many different answers to questions like "Who was his toughest opponent?" and "What was his best knockout?"
For this list, let's take a look back at his 10 best victories. These are the top 10 most important wins in his 16-year career as a professional boxer.
By being the first champion to win lineal titles in four weight divisions and winning 10 titles, it's going to be a tough task to rank 10, but these are the most important in terms of separating him from the rest of the boxers in the sport.
The rematch between Mexican legend Marco Antonio Barrera and Manny Pacquiao turned out to be a slightly more competitive bout than most had expected.
Barrera, who was 33 at the time, wanted to get revenge on the fighter who had stopped him four years earlier.
He was coming off a close decision loss to Marquez while Pacquiao had just destroyed Erik Morales and Jorge Solis.
For 12 rounds, both boxers fought competitively and, to many fans' surprise, they saw Pacquiao take the older Barrera the distance.
It didn't have the same ending as the first, but it was a better fight because of it.
Pacquiao had just started to make his move to lightweight, and he wanted to do it against David Diaz for the WBC title.
Diaz was coming off of a victory over Pacquiao's rival, Erik Morales, and had a lot of confidence going into this fight.
It turned out to be a long and grueling night for the 32-year-old. He took an onslaught of punches from the Filipino superstar and lost via KO after Pacquiao landed a perfect uppercut right to his chin in the ninth round.
This would be the start of many things to come in higher weight divisions.
Besides breaking nearly every previous CompuBox record he had in his fight with Antonio Margarito, he also put on one of the standout performances of his career.
It was a decisive 12-round decision for "Pacman," but it also showed just how big of a fighter Pacquiao can fight and beat.
Margarito had gone into the bout 17 pounds heavier than Pacquiao, but it didn't matter.
The size advantage ended up turning into a disadvantage as Pacquiao unloaded combinations on the "Tijuana Tornado."
He couldn't put him away, but that's more of a sign of Margarito's heart than it is Pacquiao's fighting ability or power. Just look at Margarito's face after the bout.
Puerto Rico's superstar, Miguel Angel Cotto, met up with Filipino superstar Manny Pacquiao for a 12-round welterweight fight for the WBO title.
For the early rounds, Cotto looked to appear a serious threat. He was dropped in the third and again in the fourth. It looked like the end was near for him, but he fought back valiantly, and Pacquiao respected him and his desire to win.
With several glances to the referee to stop the bout, Pacquiao knew what he had to do and fired off a few punches before the referee jumped in to stop the attack in the 12th and final round.
This may not be his best victory, but it was a victory.
The controversial split-decision still haunts Marquez till this day, and he wants a third fight between himself and Manny Pacquiao. He may get it this fall or early winter.
Their first fight was ruled a draw as Marquez rallied down the stretch of a fight he had been knocked down three times in the first round in.
The second fight was even closer, and many ringside observers had thought Marquez had done enough to earn the decision. He lost by a single point on one scorecard.
The biggest question going into the 2008 match with decorated Olympic gold medalist Oscar De La Hoya was could Pacquiao handle the bigger and stronger opponent?
Pacquiao had to move from lightweight to welterweight to challenge the former pound-for-pound best boxer.
"The Golden Boy" weighed in three pounds heavier, but Pacquiao was the one who went into the bout at the heavier weight.
After eight rounds of one-sided action, De La Hoya neglected to come out for the ninth round.
The speed and power of Pacquiao was just too much for the boxer who competed in six different weight divisions over his 17-year professional career. He retired soon after the fight.
If you saw Erik Morales fight hard-punching Marcos Maidana with one eye swollen shut for the better part of 11 rounds, you would tell yourself, “This guy never gives up.”
You would be wrong, though.
In the third bout with Pacquiao, Morales was knocked down three times over three rounds and refused to get up after the last knockdown.
After being dropped against the ropes, Morales shook his head to his father in his corner and sat out the 10-count.
This could arguably be the biggest victory of Pacquiao's career because of the shocking ending. Morales, a Mexican warrior sitting out the count, is something you have to see to believe.
May 2 was the date and Ricky Hatton planned on bringing his army with him to challenge the Filipino superstar who was becoming one of the biggest and most dominant stars in sports.
A HBO 24/7 series was used to hype up the megafight between two action stars who love to stand and trade power shots.
In what was supposed to be an all-out war, it was short and sweet for Pacquiao, who knocked "The Hitman" out in the second round with a devastating left hand.
Hatton fell to the canvas with his hands over his head and was knocked out cold.
Marco Antonio Barrera had just beaten Erik Morales, Johnny Tapia and Naseem Hamed and seemed to be keeping his position as one of the best pound-for-pound fighters in the sport when he accepted a fight with Manny Pacquiao.
Up until this point in his career, many people had never heard of the young kid from the Philippines, but he was silently and quickly making his way up the featherweight rankings.
After he destroyed the Mexican boxer over 11 rounds, they finally knew who he was, and the rest is history.
Mexican rival Erik "El Terrible" Morales is the last man to defeat Pacquiao. In 2005, the Mexican legend bloodied and beat up Pacquiao over 12 rounds to win a unanimous decision.
Less than one year later, Pacquiao was back on the winning track, and he wanted revenge. He put on a show for boxing fans as he stood toe-to-toe with Morales for 10 rounds before getting the knockout victory.
It was the most satisfying win of his career and proved he was ascending to the top of the sport.
After completely dominating four-time world champion Shane Mosley over 12 rounds, Manny Pacquiao kept his pound-for-pound status, but did he live up to the expectations of the boxing world?
The answer would be no, even though he did what many thought he would do, and that's win a decision.
What Pacquiao lacked in this fight was the intensity and raw emotion that came out of him in his other bouts listed here.
He seemed to be content with just winning a decision over Mosley, an opponent who he probably respected a little too much.
It was a decisive victory, but that's all it was. It will take a better performance to make its way into the best moments of his legendary career.