"It's feeling really good," Tanaka said through an interpreter. "Really, I didn't feel anything special compared to just regular tossing. I thought everything went well."
Tanaka still needs to advance to throwing bullpen sessions and batting practice, then facing hitters in games, but said that he feels no pain in his elbow. Tanaka believes that it is possible he will make it back to the big leagues in September.
"I think I have a chance, if everything progresses the way I want it to and we want it to," Tanaka said.
Each session without discomfort is encouraging to manager Joe Girardi, who said that Tanaka will have a scheduled day off from throwing on Thursday and then will get back to work in Florida on Friday.
"I think once you start seeing him in games, whether it's a rehab game or a regular game, you'll have a better idea really of where he's at," Girardi said.
Girardi said that he is keeping the light on for Tanaka to tack a few more starts onto what had been an extremely promising rookie campaign.
"That's our hope," Girardi said. "We wouldn't be going through this if we didn't expect him to pitch for us. Our hope is he'll pitch in September."
Bryan Hoch is a reporter for MLB.com. Follow him on Twitter @bryanhoch and read his MLBlog, Bombers Beat. This story was not subject to the approval of Major League Baseball or its clubs.