Is Floyd Mayweather Jr. returning to boxing because he misses the limelight? Perhaps he feels he's still the best fighter in the world and wants to defend his pound-for-pound title? Or could it be that he's broke and needs the cash? The right answer may be "all of the above".

Despite claims by Mayweather's management that Pretty Boy has no money problems, public records show him owing nearly $6.4 million: a tax lien of $6.17 for unpaid taxes in 2007, New Jersey state taxes of $193,000 in 2007, unresolved debts worth $9,400 to three homeowners associations, $3,900 to a contractor that programmed electronics at one of his houses, and $320 to his trash collector.

Team Mayweather can try to spin this story any way they want, but it sure sounds like a money problem.

Hall of Famer Alexis Arguello died earlier today at his residence in Managua, Nicaragua. Initial reports indicate that Arguello's death resulted from a self-inflicted gunshot wound to the chest.

Arguello compiled a professional record of 82-8 with 65 KOs during a career which began in 1968 and didn't end until 1995! While he won titles at featherweight, super featherweight and lightweight, Arguello is best remembered for his two classic - but ultimately unsuccessful - title fights at 140 pounds against Aaron Pryor in 1982 and 1983. Arguello's biggest wins came against Ruben Olivares, Alfredo Escalera, Bazooka Limon, Bobby Chacon and Ray Mancini.

Arguello was a national hero in his native Nicaragua. He carried the country's flag at the 2008 Beijing Olympics and was the mayor of Managua, the nation's capital city, at the time of his death.

As one of boxing's top prospects, 22-year-old Victor Ortiz was being groomed as a future PPV superstar. Did Marco Maidana derail those plans temporarily? Or permanently? Find out why there's legitimate cause for concern in the camp of Ortiz's promoter Oscar De La Hoya.

Check out our fight recap for complete coverage.

Other fighters in action this week included Juan Manuel Lopez, Cornelius Bundrage, Jorge Arce, Arthur Abraham, Jorge Linares, Omar Narvaez, Daniel Jacobs, Deontay Wilder, Fres Oquendo, Herbie Hide, Mike Arnaoutis and Paul Spadafora. Bookmark our complete fight results page to stay on top of all the latest winners and losers.

Doctors have cleared Floyd Mayweather to resume training after a rib injury forced postponement of his comeback fight with Juan Manuel Marquez, originally scheduled for July 18. The new date is September 19. The site is still the MGM Grand in Las Vegas.

Former heavyweight champ Evander Holyfield is again facing foreclosure on his 54,000-square foot home in suburban Altanta. Holyfield reportedly expects a settlement to be reached before the 235-estate is auctioned. The Real Deal has earned in excess of $120 million in his career but at 46 - despite still considering himself an active fighter - there are no big paydays looming. Sooner or later it appears he will have to downsize to a residence that does not feature 109 rooms, 17 bathrooms, three kitchens and a bowling alley. What a hardship . . .

It looks as if there may be another heavyweight unification bout later this year as Vitali Klitschko (WBC) and Nikolay Valuev (WBA) are reportedly in talks to meet in either September or October. If Vitali were to win - as expected - the Klitschko brothers would hold all four major belts as brother Wladimir is currently the IBF/WBO champ.

Given the mess that the heavyweight division has been in recent years, anything that reduces the number of beltholders is a good thing.

What's with all the fights getting cancelled/postponed/rescheduled due to health issues? WBA featherweight champion Chris John is the latest sidelined fighter (joining David Haye, Floyd Mayweather and, briefly, Ruslan Chagaev), pulling out of his June 27 rematch with Rocky Juarez due to an "unspecified blood problem" that caused him to faint while training. In their first meeting, on February 28, John and Juarez fought to a rare, and somewhat controversial, unanimous draw.

If an opponent can be lined up on short notice, Juarez will still fight on Saturday. HBO, however, must approve the opponent in order for the fight to be included on its live broadcast, now headlined by light welterweight prospect Victor Ortiz vs. Marco Maidana.

IBF/WBO heavyweight champ Wladimir Klitschko (53-3) dominated previously undefeated Ruslan Chagaev (25-1-1) for nine completely one-sided rounds before Chagaev decided there was no point in continuing and elected not to come out for the tenth round. Klitschko dropped Chagaev with a left jab, straight right combination in round two and cut the WBA "champion in recess" over the left eye in round eight. Chagaev's only cleanly landed punch of the fight was a left hook immediately after the bell to end round seven. Chagaev, who had no answer for Klitschko's precision punching, absorbed a lot of punishment late in round nine so it was no surprise that he remained on his stool when the bell rang to begin round ten.

Today's heavyweight bout between Wladimir Klitschko and Ruslan Chagaev is not on HBO ... and it's not on ESPN ... it's on ESPN Classic. That's right, a heavyweight unification fight has been relegated to a network which reaches 35 million fewer households than ESPN. Nevertheless, if you do get ESPN Classic, then be sure to check out the fight as Chagaev could provide Klitschko's toughest test since Samuel Peter in 2005.

That's not to say it will be an entertaining fight. If Klitschko has his way - which he usually does - then it will be fought at a 'safe' distance dictated by his seven-inch reach advantage. It's also not to say that Chagaev will win. He won't. But at least he should be more aggressive and more willing to take chances than Klitschko's last seven opponents (Hasim Rahman, Tony Thompson, Sultan Ibragimov, Lamon Brewster, Ray Austin, Calvin Brock and Chris Byrd).

Klitschko-Chagaev will be televised in the U.S. at 5 p.m. ET on ESPN Classic and ESPN360.com.

The comeback of Floyd Mayweather Jr. has been delayed indefinitely after he damaged cartilage in his ribs and was forced to stop training. Pretty Boy reportedly still intends for Juan Manuel Marquez to be his comeback opponent - possibly on Sept. 19 - but the original July 18 date is definitely off. Any chance Mayweather has decided to skip Marquez altogether so he can try to secure a mega-payday with Manny Pacquaio before Pacman moves forward with a possible Nov. 14 date with either Shane Mosley or Miguel Cotto? We'll see ...

Elsewhere: Amir Khan's first title shot has been pushed back from June 27 to July 18 because WBA junior welterweight champ Andreas Kotelnik has a tooth infection that has disrupted his training.