Manny Pacquiao and Boxing's Top 10 Cash Cows of All Time

Manny Pacquiao's done quite well in the ring. His record reflects it, so does his checkbook.

The website celebritynetworth.com estimates Pacquiao's net worth to be at $70 million. That would skyrocket with a fight against Floyd Mayweather Jr., but it appears that won't be happening anytime soon. Pacquiao announced last week he will be returning to the ring on May 7, but his opponent remains unknown.

The three most likely names being thrown around are Shane Mosley, Juan Manuel Marquez, and Andre Berto.

Neither have made near the money Pacquiao has, but some boxers have exceeded him. Besides revenue strictly from boxing, some have invested well while others have made additional money off investments and others business interests, along with income from boxing.

Here's a list of the top 10 biggest cash cows, with net worth from celebritynetworth.com.

10. Mike Tyson

Ethan Miller/Getty Images

LAS VEGAS - JULY 31: Mike Tyson holds his daughter Milan as he arrives at the Juan Manuel Marquez and Juan Diaz bout at the Mandalay Bay Events Center July 31, 2010 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)

Net worth: $1 million

The figure is quite different from his peak, when it was believed his net worth was over $400 million. Tyson squandered it, but we have to put him on the list still: Six of his past fights still hold records for pay-per-view sales, including the 1997 rematch with Evander Holyfield.

Known as the "Bite Fight," it drew 1.99 million pay-per-view buys.

9. Evander Holyfield

Geoff Burke/Getty Images

BROOKLYN, MI - AUGUST 15: Former heavyweight Champion Evander Holyfield speaks at a press conference prior to the NASCAR Sprint Cup Series CARFAX 400 at Michigan International Speedway on August 15, 2010 in Brooklyn, Michigan. Holyfield is the co-Grand M

Net worth: $1 million

When he divorced from his previous wife in 2000, boxingscene.com reports Holyfield's net worth was at $90 million.

But his home went into foreclosure in 2008, and he also urged a judge to reduce child support payments since he wasn't make what he used to. Holyfield has 11 children, according to numerous websites.

8. Roy Jones Jr.

Ethan Miller/Getty Images

LAS VEGAS - APRIL 02: Boxer Roy Jones Jr. poses during the official weigh-in for his bout against Bernard Hopkins at the Mandalay Bay Events Center April 2, 2010 in Las Vegas, Nevada. The two will meet in a light heavyweight bout on April 3 in Las Vegas.

Net worth: $45 million

The former pound-for-pound king was a staple of HBO broadcasts, and later ventured into promoting as well as the music industry.

7. Lennox Lewis

John Gichigi/Getty Images

LAS VEGAS - NOVEMBER 22: Boxer/commentator Lennox Lewis looks on during the fight between Ricky Hatton of England and Paulie Malignaggi during their light-welterweight fight at the MGM Grand Garden Arena November 22, 2008 in Las Vegas, Nevada. (Photo by

Net worth: $60 million

The former heavyweight champion saw his first fight with Evander Holyfield land 1.2 million pay-per-view buys in 1999. Then in 2002, nearly two million in tuned in via pay-per-view to see him and Mike Tyson fight.

6. Manny Pacquiao

Jed Jacobsohn/Getty Images

ARLINGTON, TX - MARCH 13: Manny Pacquiao of the Philippines looks on in the ring against Joshua Clottey of Ghana during the WBO welterweight title fight at Cowboys Stadium on March 13, 2010 in Arlington, Texas. Pacquiao defeated Clottey by unanimous deci

Net worth: $70 million

A Filippino newspaper broke it down in detail, showing how Pacquiao earned $27.5 million just on fights alone from March 2008 to November 2009.

That didn't include earnings from pay-per-view. In his fight with Miguel Cotto, the paper also reports he earned $10 million from the 1.25 million pay-per-view buys.

5. Muhammad Ali

Jed Jacobsohn/Getty Images

LAS VEGAS - MAY 01: Boxing legend Muhammad Ali looks on during the Floyd Mayweather Jr. and Shane Mosley welterweight fight at the MGM Grand Garden Arena on May 1, 2010 in Las Vegas, Nevada. (Photo by Jed Jacobsohn/Getty Images)

Net worth: $80 million

Let's forget about his past fights and consider just his name brand alone and the memorabilia linked to him. He also has a museum dedicated to him in his hometown of Louisville, Kentucky.

4. Floyd Mayweather

Mike Ehrmann/Getty Images

MIAMI, FL - DECEMBER 01: Boxer Floyd Mayweather Jr watches a game between the Miami Heat and the Detroit Pistons at American Airlines Arena on December 1, 2010 in Miami, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading a

Net worth: $90 million

The man who calls himself "Money" could earn so much more if he fights Manny Pacquiao. His fight with Oscar De La Hoya in 2007 was record breaking, with 2.4 million pay-per-view buys. Mayweather also reportedly earned over $10 million for the fight.

3. Sugar Ray Leonard

Sandra Mu/Getty Images

HAMILTON, NEW ZEALAND - SEPTEMBER 03: Sugar Ray Leonard poses beside the Waikato River at SKYCITY on September 3, 2009 in Hamilton, New Zealand. (Photo by Sandra Mu/Getty Images)

Net worth: $100 million

Besides being the marquee fighter of his era and fighting in some of the biggest fights in boxing history, he also became an advertiser's dream and made the famous commercial with his son. Leonard also benefited from investments he's made.

2. Oscar De La Hoya

Harry How/Getty Images

LOS ANGELES, CA - SEPTEMBER 18: Oscar de la Hoya smiles before the Middleweight bout against Shane Mosley and Sergio Mora at Staples Center on September 18, 2010 in Los Angeles, California. (Photo by Harry How/Getty Images)

Net worth: $175 million

The former gold medalist set pay-per-view records for his fights with Mayweather and Felix Trinidad. He also expanded his reach, and is now a promoter, and has business interests involving media, real estate, and ownership in the Houston Dynamo of Major League Soccer.

1. George Foreman

Steve Finn/Getty Images

LONDON - DECEMBER 17: Former World Heavyweight Champion George Foreman launches new additions to his Lean Mean range, at No 5, Cavendish Square on December 17, 2003 in London. New additions include the Lean Mean Toasting Machine and the Lean Mean Boiling

Net worth: $250 million

You guessed it—the George Foreman grill made this former champ the cash cow. In a 2004 article in Businessweek magazine, Foreman didn't reveal how much he made as an endorser, but didn't argue his lifetime earnings were near $240 million.

Besides the grill, keep in mind Foreman's also been a motivational speaker and worked as a commentator for HBO.