American League
Gabe Kapler drove in the winning run with a single in the eighth inning to give the Boston Red Sox a 5-4 Patriots Day win over the New York Yankees.
After storming to a 4-1 third-inning lead, the Yankees looked like splitting their first meeting of the season at two games apiece.
But a run in each of the fifth, sixth, seventh and eighth innings saw the Red Sox take their third win of the four game series.
Kapler, two-for-four at the plate, hit a sharp single up the middle to complete their victory.
National League
Derrek Lee hit a grand slam to lead Matt Clement and the Chicago Cubs to an 8-1 win over the Cincinnati Reds.
With the Cubs 3-1 up in the seventh inning, Lee connected off reliever Ryan Wagner and sent a drive into the right-field bleachers.
It was Lee's fourth career grand slam and his first with Chicago.
Clement settled down after a rocky first inning to allow one run on four hits in six innings.
The right-hander retired six batters in a row and 15 out of 16 at one point, striking six and walking four.