"Nationals starter Scott Olsen, one of the team's most consistent pitchers until stiffness in his surgically repaired left shoulder forced him to the disabled list, is progressing during his rehab in Viera, Fla., and will be ready to return to the Nationals by around July 20, according to Olsen's agent, Matt Sosnick.

Olsen, who is 2-2 with a 3.77 ERA, last pitched May 21. He left the start after three innings with inflammation in his left shoulder. In 2009, Olsen's season ended in May when he underwent major surgery to repair the torn labrum in his left shoulder. In the five starts before his truncated final outing, Olsen went 2-0 with a 1.11 ERA. "