You may not recognize Andy Ruiz Jr. when he steps into the ring against Anthony Joshua on Dec. 7 in Saudi Arabia.
Ruiz said Saturday he hopes to be eight pounds lighter for the rematch of his stunning June win.
"The point wasn't to drop a lot of weight," Ruiz said on DAZN during the lead-up to the Canelo Alvarez vs. Andrey Kovalev bout. "The main thing was just to stay in the gym, stay active, eat right ... so I still feel strong, I still feel fast."
The 30-year-old already looks slimmer than he did June 7, when he became unified world heavyweight champion by TKO.
The purpose-built venue for Anthony Joshua's rematch with Andy Ruiz Jr in Saudi Arabia is close to completion.
Work on the 15,000-seat Diriyah Arena only began two months before the fight, which is on 7 December.
Briton Joshua is seeking to regain the WBA, IBF and WBO heavyweight titles after June's shock defeat by Ruiz in New York.
"The arena and site are utterly breathtaking. We can't wait," said promoter Eddie Hearn.
Joshua visited the venue after landing in Saudi Arabia on Saturday.