The righty still needs to build up strength in his shoulder and pitch more innings before returning to a big league mound. Wang hopes to be ready by late April or sometime in May. He already has had four bullpen sessions this spring.
"I need to build up the innings and the pitch count. It will take one or two months," Wang said. "The Nationals will tell me when I can pitch."
Wang missed the entire 2010 season because of right shoulder problems. After he was non-tendered, Wang re-signed with Washington in December.
The Nationals are hoping that Wang will be the pitcher who won a combined 38 games for the Yankees in 2006 and '07.
"I'm getting much better than last year," Wang said. "I'll try to get in a [Spring Training] game."