You'll see a lot of changes in this month's Power Rankings and I personally think it's for the good. Between Antonio Margarito embarrassing himself and the sport that's brought him so much good fortune (click here to read more) to Paul Williams making a stand in what's becoming a very promising career, it's time to clear the path for new developments in the sport.

Read on, enjoy this monthly feature and, by all means, please send in your thoughts, comments and disagreements to jacobs@vegasinsider.com.  

VegasInsider.com Boxing Power Rankings - Pound for Pound

Rank No. 1 Manny Pacquiao The Skinny Boxer 48-3-2; 36 KOs There's no new news in Manny Pacquiao's Hall of Fame run through the sport other then the date to fight Ricky Hatton is swiftly approaching (May 2). What can you say about the guy? He's taken on the stiffest of competition while working for lineal titles in four different weight classes or divisions (some may say three but four is the excepted number). Hands down, Pac-Man is the best fighter these eyes have laid witness to in current times (ok, Mayweather Jr. fits the description but that's moot given his current retirement status). We'll keep this space open in terms of content when the mega fight on May 2 has come and gone. Rank No. 2 Juan Manuel Marquez The Skinny Boxer 50-4-1, 37 KOs The next best thing in boxing is coming off a ninth round TKO win over young Juan Diaz. Although close on the score cards until the best got to Diaz, Marquez is no doubt the real deal. Speculation of Marquez facing off against Floyd Mayweather Jr. is exactly that, speculation. So until something official comes to the table in terms of a contract only our imagination can help predicate where Marquez goes from here. Rank No. 3 Bernard Hopkins The Skinny Boxer 49-5-1, 32 KOs Yes, he's 44 but old habits die hard. Bernard Hopkins is as tough as nails, willing to take on new born talent or veteran warriors. His last win against Kelly Pavlik was one sided in nature. Some noise about facing No. 1 ranked Tomasz Adamek from Poland quickly sank into obscurity when it was made public that Hopkins and company offered the champ a very, very low sum of a purse. It was a slap in the face and maybe a "copout" to what could have been a very dangerous exchange. Nothing new to report on the future Hall of Famer in terms of who's got next. Rank No. 4 Paul Williams The Skinny Boxer 37-1-0, 27 KOs The No. 4 spot could have gone to "Sugar" Shane Mosley for cotinuing to box at age 37 while dismantling Antonio Margarito, who attempted to fight with added weight in his glove (plaster of Paris to be exact). But we'll take a different approach here. Many will argue that Paul Williams' resume is lacking big names but hold on a minute. Williams' athleticism, reach and power are second to none and it's more of an issue about "big" fighters shying away from the junior middleweight champ. Williams is a boxer who has been known to drop and gain weight without losing any of his top skills. Let's see boxing come to Williams for once and not the other way around. He's earned that much.  Rank No. 5 "Sugar" Shane Mosley The Skinny Boxer 46-5-0; 39 KOs It's sometimes easy to overlook Shane Mosley's distinguished career. From the early days, flooring Jesse James Leija in the late 90's, to taking Oscar De La Hoya in a pair of meetings, it's been difficult to define the pinnacle of his performance. "Sugar" Shane has seen and done a lot. As of April, Mosley has voiced that he would like to be part of a "big fight" but who, where and when that happens is still up for debate. Until then all we can do is just take the wait and see approach. Could Mayweather Jr. be the next candidate? I don't think so but we've seen crazier things happen. Rank No. 6 Miguel Cotto The Skinny Boxer 33-1-0; 27 KOs He's been all over the Power Rankings since gaining momentum at the end of 2005, but we must move Miguel Cotto up a spot from the last installment. A major part for improvement in the rankings stems directly from a loss against fraudulent fighter, Antonio Margarito. It's a shame that the Margarito incident happened in the first place, but to know that he got caught in the Mosley fight only leads us to believe that it could have very well taken place in the Cotto defeat. Whether Cotto will have that bout with Margarito successfully dropped looks unlikely but let's put that behind us. The Puerto Rican sensation is scheduled to take on Joshua Clottey on June 13. Madison Square Garden will be blessed with what should materialize into another chapter in Cotto's ongoing career. Let's just hope that the ugly split-up between his uncle and trainer, Evangelista, doesn't negatively impact Cotto's future. Rank No. 7 Kelly Pavlik The Skinny Boxer 35-1-0; 31 KOs We're going to give Kelly Pavlik the benefit of the doubt (although that doesn’t sound so good, the guy only lost once in his professional career) and place him in the No. 7 spot. A tune-up fight against Marco Antonio Rubio turned out exactly as planned, and more importantly kept the young knockout artist fresh. Next on tap is a Jun. 27 scrap against Sergio Mora. If everything goes as planned the masses will enjoy a get together with gladiator, Arthur Abraham. This match could materialize into the entertainment we've been longing for. And so the waiting game for a blockbuster bout continues but not without building interest. Rank No. 8 Israel Vazquez The Skinny Boxer 43-4-0; 31 KOs It's a very close finish for the No. 8 and 9 spots, and personally if they fought one less bout between each other then it would be virtually tied. But Israel Vazquez gets the nod because of his 2-1 tally over Rafael Marquez in what's become another epic trilogy in boxing's rich history. The problem is the damage he suffered in those three fights and the healing that's needed to get Vazquez back into fighting shape. Now 13-plus months removed from the sport we must question the rust factor and the damage inflicted when we talk about a comeback. For now "Magnifico" sits at No. 8. Rank No. 9 Rafael Marquez The Skinny Boxer 37-5-0; 33 KOs He's been out of action for the same amount of time but the difference between his career rival is that Rafael Marquez has a fight scheduled out. Planning to go toe-to-toe against Mauricio Martinez, Marquez will test his skills at 33 years of age. Factor in the same abuse suffered in the Vazquez trilogy and fans and backers can only hope for the best. The best of luck to a true warrior in the sport. Rank No. 10 Ivan Calderon The Skinny Boxer 32-0-0; 6 KOs We're going to stick with fighters who have been out for a substantial amount of time by placing junior flyweight champ, Ivan Calderon in the 10th and final spot in this month's Power Rankings. Calderon is a thoroughbred in his weight class, mixing the best of all skills that a fighter is capable of possessing (although power can't be included in this class and division). There's a fight scheduled but no opponent named so keep your eyes and ears open because "Iron Boy" should be able to provide a few more years of top notch talent.