This is not only the final game of this series at Fenway Park but it's also the last game before the All-Star break this week.
In the first game on Friday night, the Yankees got the upper hand and won a slug-fest with the Red Sox, coming back to win 10-8 behind Mark Teixeira's two-run go-ahead triple in the seventh inning.
On Saturday, the two teams played a day-night double-header. In the first game, which was a make-up of a rain-out back on April 22, the Yankees won 6-1 behind a solid pitching performance by Freddy Garcia.
In the second game of the double-header, the Red Sox were able to get to Phil Hughes and won the nightcap 9-5.
Now, here were are with the fourth and final game of the series.
Ivan Nova (9-3, 4.05 ERA) will start for the Yankees, while Jon Lester (5-5, 4.33 ERA) will counter for the Red Sox.
How will tonight's game fare for each team? Will the Yankees claim their third win of the series, or can Boston muster up a second win to split the series?
Follow live with the blog as these two teams do battle on Sunday Night Baseball.