Joseph Diaz Jr. stops Rigoberto Casillas after the third round at Home Depot Center

Joseph Diaz Jr. of South El Monte is 5-0 with three knockouts after stopping Rigoberto Casillas of San Diego after the third round of their scheduled four-round featherweight bout on Saturday at Home Depot Center in Carson.

Diaz, a 2012 U.S. Olympian, battered Casillas (8-12-1) with hard shots to the head and body. Casillas did not answer the bell for the fourth round.

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