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LOS ANGELES, CA - APRIL 18: Julio Cesar Chavez Jr. and Andrzej Fonfara exchange punches during the WBC light heavyweight title fight at StubHub Center on April 18, 2015 in Los Angeles, California. Fonfara would win the fight in a ninth round TKO. (Photo by Harry How/Getty Images)

LOS ANGELES, CA - APRIL 18:  Julio Cesar Chavez Jr. and Andrzej Fonfara exchange punches during the WBC light heavyweight title fight at StubHub Center on April 18, 2015 in Los Angeles, California.  Fonfara would win the fight in a ninth round TKO.  (Photo by Harry How/Getty Images)

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LOS ANGELES, CA - APRIL 18: Julio Cesar Chavez Jr. and Andrzej Fonfara exchange punches during the WBC light heavyweight title fight at StubHub Center on April 18, 2015 in Los Angeles, California. Fonfara would win the fight in a ninth round TKO. (Photo by Harry How/Getty Images)

LOS ANGELES, CA - APRIL 18:  Julio Cesar Chavez Jr. and Andrzej Fonfara exchange punches during the WBC light heavyweight title fight at StubHub Center on April 18, 2015 in Los Angeles, California.  Fonfara would win the fight in a ninth round TKO.  (Photo by Harry How/Getty Images)

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LOS ANGELES, CA - APRIL 18: Andrzej Fonfara punches Julio Cesar Chavez Jr. to a ninth round TKO to win the WBC light heavyweight title fight at StubHub Center on April 18, 2015 in Los Angeles, California. (Photo by Harry How/Getty Images)

LOS ANGELES, CA - APRIL 18:  Andrzej Fonfara punches Julio Cesar Chavez Jr. to a ninth round TKO to win the WBC light heavyweight title fight at StubHub Center on April 18, 2015 in Los Angeles, California.  (Photo by Harry How/Getty Images)

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LOS ANGELES, CA - APRIL 18: Julio Cesar Chavez punches Jr. Andrzej Fonfara during the WBC light heavyweight title fight at StubHub Center on April 18, 2015 in Los Angeles, California. Fonfara would win the fight in a ninth round TKO. (Photo by Harry How/Getty Images)

LOS ANGELES, CA - APRIL 18:  Julio Cesar Chavez punches Jr. Andrzej Fonfara during the WBC light heavyweight title fight at StubHub Center on April 18, 2015 in Los Angeles, California.  Fonfara would win the fight in a ninth round TKO.  (Photo by Harry How/Getty Images)