Marcus Semien hit the go-ahead grand slam in the seventh inning to power the White Sox to a 6-4 win over the Tigers at Comerica Park. Austin Jackson hit a two-run home run, and J.D. Martinez also knocked in two runs for Detroit. Evan Reed took the loss in relief. The Tigers and White Sox close out their four-game series at Comerica Park this afternoon. Rick Porcello is scheduled to start opposite Chicago's Erik Johnson, with first pitch at 1:08 p.m.