The fight will be on the televised undercard of the pay-per-view headlined by Manny Pacquiao and Joshua Clottey.
Diaz was born on June 7, 1976, in Chicago, Illinois and currently carries a record of 35-2-1 with 17 knockouts.
As an amateur, Diaz fought at junior welterweight and had a record of 78-16. He won Chicago Golden Gloves four times, National Golden Gloves three times and was also a member of the 1996 U.S. Olympic Team.
By the end of ’96, Diaz turned pro and won his first 26 bouts. Then, Diaz lost his first bout against Kendall Holt by 8th-round TKO in February of ’05. Later that year, Diaz went down to lightweight where he quickly won the IBA belt. In August of ’06, Diaz defeated José Armando Santa Cruz in a come-from-behind effort to win the WBC interim title. On February 20, 2007, Diaz was awarded full status when actual WBC champ, Joel Casamayor, failed to defend his belt against Diaz.
As champion, Diaz defeated Erik Morales in 2007 by a razor-thin unanimous decision. Then, in 2008, Diaz lost his title to Manny Pacquiao by a ninth-round stoppage in a very one-sided contest.
After a year-long layoff, Diaz returned to the ring and defeated former IBF lightweight and former WBC super featherweight champion Jesus Chavez by a majority decision. Coincidently, Soto’s previous bout was also against Chavez, a contest that Soto won every round while earning a unanimous decision.
The bout between Diaz and Soto should be very interesting and exciting for those who will be impatiently awaiting the Pacquiao-Clottey main event.
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Frankfurt/Main/Germany (September 6, 2010) – Wladimir Klitschko (57-3, 48 KOs), and Samuel Peter (34-3, 27 KOs), participated today in a press conference. 
Right now there are some UFC fans looking at the title and screaming “No, No, No!!!” Hopefully those fans will still consider reading this piece and look over the examples being provided.
Some fight fans do not like to hear anything about a rivalry between the sports of MMA and boxing or even the UFC and boxing. These fans will say that you can be a fan of both or neither, and that they are totally different, hence making either comparison illogical.
Former Strikeforce middleweight champion Jake Shields will make his debut in the Ultimate Fighting Championship at UFC 121 on October 23rd. 
This Saturday, WBC junior flyweight champion Omar Nino Romero will defend his title against Ronald Barrera (27-7-2, 17 KOs). 
Bernard Hopkins has confirmed through a variety of sources that he will challenge WBC/IBO light heavyweight champion Jean Pascal on December 18 in Montreal, Canada. 
The World Boxing Organization (WBO) featherweight championship fight between undefeated titlist Juan Manuel “JuanMa” Lopez, of Caguas, Puerto Rico, and Rafael Marquez, of México City has been rescheduled for Saturday, Nov. 6, 
In the main event of UFC 118, lightweight champion Frankie Edgar defeated former champion BJ Penn for a second time by a unanimous decision. 
On Saturday night, at the Coliseo Mario “Quijote” Morales in Guaynabo, Puerto RicoIn, WBA jr. flyweight champion Giovanni Segura knocked out WBO champion Ivan Calderon to become the unified world champion. 
Bellator Fighting Championships officially announced that the promotion will bring the first Nationally televised, sanctioned MMA event to Wisconsin with Bellator 29, taking place in Milwaukee from the historic Rave-Eagles Ballroom on Sept. 26th. 
This Saturday, one of the most popular fighters in UFC history, Randy Couture, will face former boxing champion, James Toney, who will be making his MMA debut. 
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At UFC on Versus 2, Jon Jones stopped Vladimir Matyushenko just 1:52 into the first round. 
This Saturday, former lightweight champion Juan Diaz will take on world lightweight champion Juan Manuel Marquez (50-5-1, 37 KOs). 
Bob Arum of Top Rank revealed on Saturday night that pound-for-pound king Manny Pacquiao will fight Antonio Margarito in a junior middleweight bout on November 13th. 
At the Tachi Palace Hotel & Casino in Lemoore, CA on Friday night, WBA light heavyweight champion Beibut Shumenov defeated Vyacheslav Uzelkov by a one-sided twelve-round unanimous decision. 
For the first-time ever, Indianapolis will get a taste of the Ultimate Fighting Championship®. Former UFC® heavyweight champion Frank Mir and former interim UFC heavyweight champion and mixed martial arts legend Minotauro Nogueira will mix it up for an encore performance on Saturday, September 25 at UFC 119: MIR VS. NOGUEIRA 2, 
On Saturday night, WBO jr welterweight champion Timothy Bradley moved up to welterweight and defeated Luis Carlos Abregu by a twelve-round unaimous decision at the Agua Caliente Resort Rancho Mirage, California. 
Fernando Guerrero furthered his pursuit of middleweight stardom with a hard fought unanimous decision over veteran Ishe Smith in Friday’s ShoBox main event. Shawn Porter and Mike Dallas Jr. also took home unanimous decision victories at the DeSoto Civic Center in Southaven, Miss. to remain unbeaten. 
