6:34 AM PT -- 3/10 -- The Rangers announced Calhoun required surgery to fix the damage ... saying the OF needed a plate inserted into his face to stabilize his fractured jaw.
"He will have limited physical activity for approximately two weeks before being re-evaluated," the team said in a statement Monday.
Willie added in a statement of his own, "Hey guys, just want to thank everyone for your prayers, I just got out of surgery and I'm doing well. Can't wait to be back hitting homers soon."
Texas Rangers outfielder Willie Calhoun has been hospitalized after getting hit square in the kisser with a fastball nearing 100 MPH.