(Bronx, NY) -- Russell Martin belted a three-run homer to help the Yankees beat the Brewers 5-2. Jorge Posada popped a solo shot in the sixth for New York, which will go for a three-game sweep on Thursday. A.J. Burnett fired seven innings of two-run ball to improve to 8-and-6. Mariano Rivera pitched a perfect ninth to earn his 21st save. Ryan Braun and Prince Fielder plated a run apiece for the Brewers. Shaun Marcum fanned six, but allowed four runs in five innings to fall to 7-and-3.