Julio Cesar Chavez Jr. and Andrzej Fonfara both weighed in Friday at 171.5 pounds for their 12-round light heavyweight fight Saturday at StubHub Center in Carson, Calif.

The fighters agreed on a catch weight of 172 pounds, three below the light heavyweight limit. Chavez is fighting above 170 pounds for only the second.

“I’m ready. I’m excited for my comeback,” said Chavez, who hasn’t fought since March 1 of last year. “And I’m very excited to fight in L.A. L.A. is like my second home. I live here, my daughter (1-year-old Julia) was born in L.A.

“I’m ready for a good win for Mexico and all the people living here in the U.S.A.”

Why did he choose Fonfara, a difficult opponent, after such a long layoff?

“I can come back to the top of boxing [if] I beat Fonfara,” he said. “He’s a tough opponent but I like the challenge. I’m ready [to] win Saturday.”

Said Fonfara: “I put everything into tomorrow. … It doesn’t matter how I win, a decision or knock out. I believe I can stop him but this is boxing and you never know what will happen. I’m going to box. If I have a chance to stop him, I’ll stop him.”

Amir Imam weighed in at the limit of 140 for his 10-round junior welterweight fight against Walter Castillo, who weighed 138.

The card will be televised on Showtime at 7 p.m. ET / 10 p.m. PT.