SAN FRANCISCO -- San Francisco Giants left fielder Mark DeRosa underwent an MRI exam and nerve tests on his troublesome left wrist, and he missed his second straight start Tuesday night against the San Diego Padres.
The 35-year-old DeRosa, in his first year with San Francisco, had surgery on another part of the wrist after last season with the St. Louis Cardinals and now calls that procedure a "failure."
According to DeRosa, the tendon sheath is "completely ruptured again," the San Francisco Chronicle reported.
DeRosa said he has lost feeling in his left pinkie and ring fingers, according to the newspaper, but believes that might be related to getting hit by a pitch in late April, rather than being linked to the torn sheath.
It is unclear how long DeRosa might be sidelined or whether he could need another surgery either during or after the 2010 campaign.
DeRosa said he was able to play with the wrist injury during his season with the Cardinals.
Manager Bruce Bochy planned to limit DeRosa to a reserve role for a couple of days to let the injury calm down. DeRosa has been in a funk at the plate and taking extra hitting to try to regain his stroke, but Bochy believes that may have further aggravated the wrist.
DeRosa was in a 6-for-50 (.120) funk the past 12 games, lowering his average from .267 to .194. He has one home run and 10 RBIs.