The 2008 American League Cy Young Award winner threw six scoreless innings Sunday for Triple-A Tacoma on Sunday.
Lee threw 68 pitches of which 46 were strikes.
"I felt good," Lee told the Times. "Threw strikes. Forced them to swing the bat. It went good. The injury is a nonissue. I would have liked to have had a little more command, but that will come. Every [pitch] felt comfortable. My curveball wasn't as good as I wanted, but that's not out of the ordinary. But fastball, changeup, cutter, they were all where I wanted them to be.
"There was no apprehension. I was excited and ready to get back to facing hitters. I don't know what I expected. I expected to come out here and throw strikes. I was able to do that and work on some things. I felt strong the whole time."