Jordan Zimmermann held the Braves scoreless for eight innings as the Nationals won 2-0 on Wednesday.
Chris Tillman spun eight shutout frames in a 5-1 win over the Angels on Thursday night.
A second opinion on Gavin Floyd's right elbow has confirmed a tear of his flexor muscle.
Andrew Bailey is nursing soreness in his right bicep.
Ryan Madson recently had a minor procedure to remove scar tissue from his right elbow.
Jayson Werth is expected to miss a couple games with hamstring tightness.
Jason Heyward (appendectomy) is scheduled to take dry swings on Saturday.
Colby Lewis (elbow) could begin a rehab assignment for Triple-A Round Rock on May 9.
Brewers manager Ron Roenicke said Thursday that Aramis Ramirez (knee) will not play a full nine innings or in back-to-back games for a while after being activated from the disabled list.
White Sox manager Robin Ventura is hoping that Jake Peavy (back) will be ready to start on Sunday.
Rockies signed RHP Roy Oswalt to a minor league contract.
Francisco Rodriguez has secured a work visa and is expected to report to High-A Brevard County next week.