Vasquez vs Marquez(1,2 n 3) Vitali vs Lewis Pac vs Morales(1 n 2) and all the other one's everybody else mentioned
vargas v trinidad, hopkins v calzaghe(cos b-hop was robbed), mosley v cotto, judah v cotto(judah looked real gud early), and pascal v froch.
ken norton vs larry holmes. rafael marquez vs israel vasquez gatti vs ward I muhammad ali vs joe frazier III Holyfield vs Bowe Benn vs Eubank so many great ones you cant name em all
I'm not sure how a loss can be great as greatness tends to imply victory. I would reserve this category for a select few because they did everything they could but just fell short. Ken Norton and Dwight Qawi make my list for their performances against Larry Holmes and Evandr Holyfield respectively. Nothing left to give. 15 rounds and they left it all in the ring.
Veteran master boxer Gerry Peñalosa's performance against the young lion Juan Manuel Lopez ... Max Kellerman: "Peñalosa is not human..." .