Here we go.

The fight many fans have been waiting for is about to get started.

The WBO Welterweight title is on the line Saturday night when Manny Pacquiao faces Sugar Shane Mosley, with Pacquiao rated as a 10-1 favorite.

But Mosley has the ability to make this a competitive fight and can still pull off an upset.

Pacquiao has been involved in his singing aspirations and political career, and might be distracted, while Mosley is motivated by the possibility of great paydays in the future should he reclaim a belt.

Mosley has never been knocked out, which suggests that this fight will go the distance, and that Pacquiao will prevail in a decision. But trainer Freddie Roach believe Pacquiao can knock him out.

Pacquiao handily beat Antonio Margarito, Josh Clottey, Miguel Cotto, and Ricky Hatton. He knows big fights, and even if he makes mistakes, he has the ability to recover.

Mosley has nearly a three-inch height advantage on Pacquiao, and will use it to land some harder punches. But those punches may not be very effective with Pacquiao's strong chin.

More than likely, Pacquiao will be the aggressor, and this will be good for Mosley. The California-native will respond with counter punches and is good at defending himself. However, Pacquiao is good at keeping the pressure on his opponent, and Mosley may not be able to handle multiple rounds of strong combinations.

Pacquiao has power, and one solid combination by the 32-year-old puncher might be all it takes for Mosley to suffer on the scorecards, and hurt his confidence.

Expect Mosley to come on late in the fight, but then burn out. At 39 years old, Mosley may be overall fatigued, while Pacquiao continues to show he's capable of being effective over 12 rounds.

PREDICTION: Pacquiao will get the win because of his strong start, but he won't look good doing it. Pacquiao will seize on a vulnerable Mosley who will make strides in later rounds but open himself up to punishment and fatigue in the 11th round. In the 11th, Pacquiao will finish with a flurry that will result in a technical knockout, the first of time Mosley has lost that way.