Things got heated at a recent event in New York City promoting the upcoming fight between WBC middleweight title holder Sergio Martinez (49-2-2, 28 KOs) and Julio Cesar Chavez, Jr. (46-0-1, 32KOs) in Las Vegas on September 15. Wrods were exchanged between the fighters' camps, and a fight had to be broken up. Things cooled down when a birthday cake was brought out for Chavez' father, Mexican boxing legend Julio Cesar Chavez, Sr. He is 50 years old.