Giants tight end Jake Ballard had medication injected into his knee on Thursday and is questionable for Sunday's game against San Francisco, according to a source. Tom Coughlin said that Ballard had swelling in his knee. "I'm not concerned," Ballard said. "I saw a doctor for a little bit last night and performed a procedure and I will be ready to go. They pulled me out to rest me for today." Ballard sprained his posterior cruciate ligament against the Redskins on Dec. 18 and missed the final two games of the regular season with the injury.