Giants trainer Dave Groeschner says Wilson is getting extensive treatment and his status is day to day. But he's definitely been ruled out of Thursday night's game against the Braves.
Wilson reported the pain after blowing a save Monday night. He gave up three runs in the ninth as the Braves pulled out a 5-4 victory.
Wilson flew to Pensacola, Fla., on Wednesday to get his elbow checked by Dr. James Andrews, who performed major elbow surgery on the reliever back in 2003.
Andrews found no major problems, sending Wilson back to Atlanta with a recommendation of rest and treatment.