Jul 01, 2009 8:14 AM EST

Cardinals infielder Mark DeRosa injured his left wrist while swinging Tuesday night against the Giants.

DeRosa is hitless in his last nine at-bats since landing in St. Louis following a trade from Cleveland.

He said he felt a "little tweak" while swinging and missing Randy Johnson's changeup before striking out in the fourth inning.

DeRosa said he expected to have tests done on his wrist Wednesday.

Via ESPN