Giants third baseman Mark DeRosa left Wednesday night's game against the Dodgers in the fourth inning after straining his left wrist. His playing status was announced as day to day. The injury was an ominous one for DeRosa, who has undergone left wrist surgery twice since October 2009. He was sidelined with inflammation in the wrist during late April and was playing his seventh game since being reinstated from the disabled list last Tuesday.