"I feel pretty good," Tomlin said. "We'll see how I respond [on Friday] and go from there."
Tomlin was able to throw all of his pitches during the session and said that none of them caused him any pain.
Manager Manny Acta said earlier in the week that he expects Tomlin to be able to return to the rotation without needing a Minor League rehab start. Tomlin is 1-2 with a 4.67 ERA in five starts this season.
"He looked good," Acta said on Thursday. "He's expected to be OK."