Ricky Hatton, right, of England, and Paulie Malignaggi trade punches in the seventh round of a 12-round junior welterweight boxing match in Las Vegas, Saturday...

July 23, 2008 - Cabazon, CA] Jeff Lacy and Epifanio Mendoza trade punches during their bout at Morongo Resort & Casino in Cabazon, CA on ESPN 2 - Wednesday Night Fights...

LAS VEGAS - MARCH 13: Shane Mosley and Winky Wright trade punches during the undisputed 154 pound championship on March 13, 2004 at Mandalay Bay Resort & Casino in...

July 23, 2008 - Cabazon, CA] Daniel Jacobs and Sergio Rios trade punches during their bout at Morongo Resort & Casino in Cabazon, CA on ESPN 2 - Wednesday Night Fights...

13 Sep 1997: Boxers Keith Mullings (left) and Raul Marquez trade punches during a match at the Thomas and Mack Center in Las Vegas, Nevada

...New York, NY, USA; WBA Welterweight Champion Miguel Cotto (white trunks) and "Sugar" Shane Mosley (black trunks) trade punches during their 12 round fight at Madison Square Garden in New York, NY. Cotto won the...

...New York, NY, USA; WBA welterweight champion Miguel Cotto (white trunks) and Sugar Shane Mosley (black trunks) trade punches during their 12 round fight at Madison Square Garden in New York, NY. Cotto won the...

Description/Caption: November 23, 2007 - Los Angeles, Ca - Fernando Vargas and Ricardo Mayorga trade punches during their 12 round bout for the WBC Super Middleweight Championship at Staples Center. Mayorga won...

...2007; New York, NY, USA; WBC heavyweight champion Samuel Peter (light blue) and Jameel McCline (dark blue) trade punches during their 12 round bout at Madison Square Garden in New York. McCline knocked down Peter...

LAS VEGAS - SEPTEMBER 13: Joel Casamayor (R) and Juan Manuel Marquez trade blows during their bout at the MGM Grand Garden Arena September 13, 2008 in Las Vegas, Nevada...

Joel Casamayor of Cuba, trades punches with Juan Manuel Marquez of Mexico, during the ? round of their Iightweight boxing match Saturday, Sept...

...10, 2007; New York, NY, USA; Joel Casamayor (white trunks) and Jose A. Santa Cruz (black trunks) trade punches during their 12 round fight at Madison Square Garden in New York, NY. Casamayor retained the...

Miguel Cotto, right, of Puerto Rico, trades punches with Antonio Margarito, of Mexico, during the second round of their WBA welterweight championship boxing match...

13 Nov 1992: Riddick Bowe and Evander Holyfield trade blows during a bout in Las Vegas, Nevada

Manny Pacquiao, right, trades punches with David Diaz during their WBC lightweight championship boxing match at the Mandalay Bay Hotel & Casino...