"He's frustrated and he wants to pitch," Braves manager Fredi Gonzalez said. "But he says it doesn't feel right."
Hanson limited Tuesday's bullpen session to just nine pitches and then revealed that he was simply trying to get a feel for throwing off a mound again. He planned to throw a longer bullpen session on Wednesday, but opted not to even try because he was still feeling soreness.
This marks the second time this year that Hanson has been on the disabled list with right shoulder tendinitis. Two previous MRI exams have revealed no structural damage.
"Talking to [the team's head athletic trainer Jeff Porter], they think maybe he hasn't given it enough time and needs to get more rest," Gonzalez said.
Before Tuesday, Hanson had not thrown off a mound since Aug. 6, when he allowed seven earned runs in 3 1/3 innings against the Mets. The right-hander was subsequently placed on the DL on Aug. 7.
When Hanson was initially diagnosed with tendinitis two months ago, he missed just two weeks and felt tightness when he returned to start against the Mariners on June 26. The 24-year-old pitcher did not seem to be ailing when he combined to allow two runs in 14 innings over his next two starts.
But Hanson has posted an 8.10 ERA and allowed opponents a .370 on-base percentage in his five starts since the All-Star break.