Eight-division world champion Manny Pacquiao will be heading into the ring with underdog Chris Algieri hoping to regain his knockout mojo.
The Pinoy great hasn't managed a knockout in a fight since 2009, and although his 56 wins and 38 knockouts record is impressive some have begun to question whether he still has the power he did five years ago.
On Sunday morning Pacman will be facing off against unfancied American Chris Algieri in Macau to defend his WBO welterweight belt.
Algieri surprised the boxing world when he defeated Ruslan Provodnikov in June, earning a fight against the Pacman. The American is four inches taller than the defending champion and has a longer reach, however, Pacquiao and his trainer Freddy Roach are both talking about a knockout.
Pacquiao said: "We cannot go into the fight thinking about the knockout. A knockout will not change the result of the fight as long as we get the win. Chris Algieri is a very dangerous fighter, and we are taking nothing for granted."
Long-time Pacquaio trainer Roach said: "Manny is punching better than ever and him coming back down to a better weight for him, instead of 147 he's fighting at 144, this fight. He's a better puncher at that weight and we're gonna have our first knockout in a while… he feels the press has downplayed him a little bit because he hasn't knocked anyone out lately. He wants to get that fire back and he wants a knockout. This is the first time he ever told me that we will knock this guy out."
The 30-year-old challenger was also in bullish form, despite the fact that Pacquiao is a significant favourite to win the fight at 1/14 with Paddy Power.
Algieri said: "People always ask me, 'What is your best weapon?' They expect me to say, you know, my jab or my footwork, and I always say, 'My will to win and my ability to find a way to win.'"
"I'm used to being the underdog and used to being in situations that are uncomfortable. I've gone into fights with serious injuries; you know, a fractured thumb, or a fractured elbow. I've torn ligaments in my knees in kickboxing fights before."