Philip Humber has been solid on the mound for the White Sox on Tuesday night, but he made a mistake against Hideki Matsui, who hit a two-run home run to right field in the fourth. That's the difference at this point, as the White Sox trail 2-1 in the fifth inning.
Chicago picked up its run in the fifth, with some help from the Rays. An errant throw to first base by James Shields allowed Dayan Viciedo to advance all the way to third, and Alexei Ramirez promptly singled him home.
Other than that, Shields has been in control -- he's struck out seven batters through five innings.