Wang, who is recovering from shoulder surgery, threw 10 pitches on flat ground and then 15 pitches on the mound. He was throwing pain-free during the session.
In fact, according to pitching coach Steve McCatty, it appeared Wang wanted to throw more pitches. McCatty said Wang's sinker was moving down in the zone.
"I was happy with what he did," McCatty said. "He felt good and the ball has that sink to it. It was very good to see. The arm slot looked good. He was free and easy with the ball."
Wang is not expected to pitch in a big league game until sometime in May.
Bill Ladson is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.