It's going to be a busy boxing weekend, headlined by Vitali Klitschko's title defense against Kevin Johnson and the rematch between Juan Diaz and Paulie Malignaggi.

Other fights this weekend include title defenses for Timothy Bradley, Vic Darchinyan, Jean Pascal and Isaac Hlatshwayo, as well as non-title bouts for Victor Ortiz, Oleg Maskaev, Fres Oquendo and many more.

Check out our schedule of upcoming fights for complete details.

The latest inductees into the International Boxing Hall of Fame are featherweight champion Danny "Little Red" Lopez, light flyweight champion Jung-Koo Chang, manager Shelly Finkel, referee/commissioner Larry Hazzard, promoter Wilfried Sauerland, matchmaker Bruce Trampler and journalist Ed Schuyler.

Posthumous honorees to be inducted on June 13, 2010 in Canastota, NY are light heavyweight Lloyd Marshall, featherweight champion Young Corbett II, lightweight champion Rocky Kansas, light heavyweight/heavyweight contender Billy Miske, broadcaster Howard Cosell and Paddington Tom Jones.

Paul Williams is among the top ten pound-for-pound fighters in the world but comparatively little known Sergio Martinez gave the Punisher all he could handle last night in Atlantic City. In fact, were it not for one incompetent judge, Martinez could have earned a well-deserved draw.

Both fighters were knocked down in round one and that set the stage for an action-packed fight-of-the-year candidate. Williams was generally the aggressor but Martinez landed the cleaner, harder shots. Williams threw more punches but Martinez was more accurate. Both fighters demonstrated great skill and heart throughout. When the scores were totaled after 12 rounds, the decision could have gone either way and it would have been tough to argue with a draw. Two judges got it about right at 114-114 (by Julie Lederman) and 115-113 (by Lynne Carter) for Williams. The third judge, Pierre Benoist, turned in a ridiculous 119-110 for Williams - calling the first round even, giving the second to Martinez and then scoring all of the remaining ten rounds 10-9 for Williams. Some judges tend to prefer the more aggressive fighter but they're supposed to reward effective aggressiveness. While Benoist's scorecard was a disgrace, it does not take away from an incredible performance by two great fighters. No one else between 147 and 160 pounds is going to be in a hurry to get in the ring with either Williams or Martinez so a rematch - hopefully with three competent judges - is entirely possible.

On the undercard, heavyweight contender Chris Arreola scored a fourth round TKO over a game but undersized Brian Minto, who was giving up five inches in height and reach (plus 45 pounds in weight) to Arreola. Arreola talks a good game about how hard he works in the gym ... yet his weight continues to rise. He weighed a jiggly 251 in his September TKO loss to Vitali Klitschko. This time? A career high 263. If Minto was Arreola's size, this fight could have gone either way.

Elsewhere, WBA super lightweight champ Amir Khan needed just 76 seconds to destroy previously undefeated Dmitiry Salita. Khan, defending his title for the first time in front of a supportive crowd in Newcastle, England, dropped Salita with the first punch he threw and knocked him down two more times before the fight was stopped.

Tune-up bouts are always a risky proposition. A star fighter can overlook an opponent and deliver a subpar performance. Or suffer a bad cut or injury which forces the delay of the bigger event. Typically, however, the only way to jeopardize the big fight is to look so bad that the public will no longer pay to see it ... like by getting stopped in the tune-up ... in the first round ... which is exactly what happened to Roy Jones Jr. when he ventured to Sydney, Australia to take on Danny Green in a tune-up before a long-awaited rematch with Bernard Hopkins.

Midway through round one, Green landed a left followed by a right to the side of Jones' neck and head. The punch didn't look like anything special but Jones went down and was clearly hurt as he rose to his feet to continue. For the next 30 seconds, Green threw punch after punch and Jones simply covered up. None of the punches did much damage but Jones wasn't fighting back and his legs looked shot so referee Howard Foster jumped in and stopped the fight just 2:02 after it began.

Roy Jones Jr. vs. Danny Green: Video of Entire Fight

While the rematch is no longer viable, Bernard Hopkins still took care of his tune-up business later in the day by outpointing Enrique Ornelas. The ageless Hopkins, now 44, delivered a typical Bernard Hopkins performance - taking a few rounds to figure out his opponent and then using his superior skills to start winning rounds. Hopkins clearly won but, with the fight taking place in Philadelphia, the official scorecards reflected a little home cooking at 120-109, 119-109 and 118-110.

Bernard Hopkins needs a new opponent. Roy Jones Jr. needs to retire.