This content is protected Jefferson/Izon seemed like all hope was lost, but that wasn't the only time Izon played heavybag before rallying.
Career comebacks or fight comebacks? If the latter, does being down on the cards count too? I'll throw out some for both if that's alright. Foreman and Jofre for career, Marquez vs Pac 1 and Dempsey vs Firpo. John Tate vs Michael Dokes possibly? Marciano vs Walcott 1 and Moore. Olivares survived a lot of flash knockdowns to come back and beat the bejeezus out of opponents a couple times I think. Bradley vs Holt. Literally any Mathew Saad Muhammad fight. SRR came from behind against Gavilan in both fights if memory serves correct. Moore vs Durelle. Most of Jeffries fights followed the pattern of him getting beaten up, his opponents punching themselves out, with him coming back to stop them like he did against Fitz and Corbett. The most recent example I can think of is Rafael Espinoza vs Robeisy Ramirez, Esponiza gets dropped and hurt badly in the 4th I think and rallies back for a KD in the 12th to edge out Robeisy on the cards.
Eder Jofre coming back following 3 years away from the ring post Harada 2, making the huge step up from BW to FW, where Jofre was on the small side, going 25-0, fighting until 40, beating numerous world class FWs, most notably Vicente Saldivar and Jose Legra, deserves a mention here.
Matthew Saad Muhammad, Gatti, both a few times. Michael Carbajal against Jorge Arce always comes to mind for these questions.
Mike Weaver pulling out the victory with under a minute left in the 15th vs. John Tate... Also, Shannon Briggs, who stopping Sergei Liakhovich with 1 second left in the 12th
Izon-Jefferson and Castro-Jackson 1 were the first two to come to mind. They were already mentioned. Micky Ward-Alfonso Sanchez Archie Moore-Yvon Durelle 1