Manny Pacquiao has declared that he will do everything in his power to earn a decisive, knockout victory over old adversary Juan Manuel Marquez in their December clash.

Pacquaio will do battle will the 39-year-old Mexican for a fourth time on Saturday, December 8 after earning two highly contentious victories and a draw in their first three fights.

Pac Man told reporters on the New York leg of the pre-fight press tour that he will look for a fresh approach in order to rediscover the aggresive, knockout style that made him such a popular fighter.

He said: "My focus this time is to go for the knockout, "I am a good counter-puncher, too, but that makes for a boring fight. I want to make the fight exciting. I don't want the fans to be bored.

"I want a win that isn't close like the last three. It has to be a decisive victory. I will focus this time. I have to study and train using new techniques and strategy, and apply techniques never used in my previous fights."

Pacquaio also confirmed that he will spend his entire training camp at Freddie Roach's Wild Card Gym as he looks to erase the memory of a controversial split decision defeat to Timothy Bradley in June.