Pacquiao started as the aggressor in the opening round and was actively pursuing Marquez toward the end of the third round when the Mexican counter-puncher caught Pacquiao with a power right hook which sent the eight-division champion to the canvas.
Pacquiao was visibly hurt but was able to rise and fought back until the end of the third round.
In the fourth round, Pacquiao pursued Marquez relentlessly but Marquez' defenses were working and blocking Pacquiao's punches.
Pacquiao came back strong in the filth round, landing power shots and causing Marquez' nose to bleed as Pacquiao scored a knockdown toward the end of the round.
Marquez was visibly hurt in the sixth round as Pacquiao started to land power shots on targets but Marquez caught Pacquiao with a power right hook that rendered Pacquiao unconscious seconds before the final bell.
Marquez who was badly hurt in the sixth round said in the post-fight interview (via ESPN
) he knew Pacquiao was going to knock him out sooner.
"I threw a perfect punch," Marquez said. "I knew Manny could knock me out at any time."
Recovering from the devastating power punch by Marquez seconds before the end of the sixth round, Pacquiao said he thought he was getting the Mexican in the next rounds but he got hit by an unobstructed power shot.
"I thought I was getting him in the last couple of rounds but I got hit by a strong punch," Pacquiao said. "I never expected that punch."
Asked about the possibility of a fifth encounter between Pacquiao and Marquez, promoter Bob Arum said
, "Why not?"