Doug Fister was knocked around for five earned runs on nine hits over 4 2/3 innings in a loss on Sunday night against the Rangers.
Scott Van Slyke is day-to-day after leaving Sunday's game with a leg injury.
Carlos Ruiz (hamstring) will undergo an MRI on Monday.
Cameron Maybin (wrist) could begin a rehab assignment Friday.
Andrew McCutchen is day-to-day with right knee soreness.
Barry Zito allowed five runs on 11 hits over 5 2/3 innings in his start Sunday against the Rockies.
Juan Nicasio threw six scoreless innings Sunday in a win over the Giants.
Dexter Fowler went 4-for-5 with two runs in Sunday's win over the Giants.
Andrew Cashner held the Nationals to three runs on seven hits over six-plus innings Sunday for his third win of the season.
Dan Haren was pulled in the fifth inning after giving up seven runs Sunday in a loss to the Padres.
Nate Karns allowed three runs on seven hits over six innings and had six strikeouts in his start Friday at Double-A Harrisburg.
Luis Mendoza allowed just two runs on eight hits over six innings in his start Sunday against the Athletics.
Ryan Cook earned his first save of the season on Sunday against the Royals.
A.J. Griffin gave up three runs on seven hits over six innings Sunday in a no-decision against the Royals.
Jason Vargas threw seven scoreless innings in Sunday's win over the White Sox.