Barrera vs. Juárez

Márquez vs. Pacquiao

• 

  LAS VEGAS - DECEMBER 07: Boxer Juan Manuel Marquez arrives at Studio 54 inside the MGM Grand Hotel/Casino for "54 BELOW" Studio 54's 10th Anniversary Party on December 7, 2007 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Studio 54)

  Getty Images

• 

  Juan Manuel Marquez, of Mexico, celebrates his unanimous victory over Marco Antonio Barrera, of Mexico, in the WBC 130-pound championship boxing match in Las Vegas on Saturday, March 17, 2007. (AP Photo/Isaac Brekken)

  Getty Images

• 

  Juan Manuel Marquez, of Mexico City, delivers a left to the head of Manny Pacquiao, of the Philippines, in the fifth round of their WBA andIBF world featherweight title fight Saturday, May 8, 2004 at the MGM Grand Garden Arena in Las Vegas. (AP Photo/Eric Jamison)

  Getty Images

• 

  Juan Manuel Marquez, right, of Mexico, stands over Terdsak Jandaeng, of Thailand, after knocking him down during their WBO interim featherweight championship boxing bout in Stateline, Nev., on Saturday, Aug. 5, 2006. (AP Photo/ Brad Horn)

  Getty Images

• 

  Juan Manuel Marquez, right, of Mexico City lands a punch on the chin of Marcos Licona of Westminster, Calif. during their featherwieght bout Saturday Aug. 16, 2003 at Mohegan Sun in Uncasville, Conn. (APPhoto/John Spivey)

  Getty Images

• 

  Juan Manuel Marquez, right, of Mexico, lands a right to the chin of Victor Polo, of Colombia, in the second round of their WBA/IBF featherweight championship bout on Saturday, May 7, 2005, at the Mandalay Bay Events Center in Las Vegas. (AP Photo/Joe Cavaretta)

  Getty Images

• 

  Mexican featherweight boxer Juan Manuel Marquez, right, lands a punch on Indonesian boxer Yohannes Christian John during their featherweight WBA title fight Saturday March 4, 2006 in Tenggarong town, East Kalimantan province, Indonesia. John retained hisWorld Boxing Association's featherweight title Saturday after beating Marquez withall three judges scored the bout 116-110, 117-111 and 116-112 in favorof John. (AP Photo)

  Getty Images