The Orioles improved to 5-1 under new manager Buck Showalter with a 4-3 victory over the Chicago White Sox today at Camden Yards.

The White Sox had tied the score at 1 in the fifth inning, but the Orioles scored two in the sixth and one in the seventh to support Jeremy Guthrie's solid eight innings of work. Guthrie (6-11) gave up just the one run on six hits while striking out four.

Chicago scored two in the ninth off closer Alfredo Simon on Ramon Castro's two-run homer. Mark Buehrle (10-9) took the loss for the White Sox.

Orioles shortstop Cesar Izturis reached a milestone with his 1,000th hit in the second inning.