Mariners manager Lloyd McClendon announced Friday that Chris Young will have his next start pushed back until Monday.
Matt Garza (oblique) threw a successful simulated game on Friday, and was able to use all of his pitches effectively.
An MRI exam earlier in the week showed that Ryan Zimmerman's injured hamstring is continuing to heal well.
Hyun-Jin Ryu (glute) is slated to return to the Dodgers starting rotation on Sunday.
Steve Pearce was removed from Friday's game against the Twins in the third inning due to a right abdominal strain.
Yusmeiro Petit will make another start for the Giants on Tuesday against the Rockies in Colorado.
Chris Owings is expected to rejoin the Diamondbacks when rosters expand on Monday.
Cody Ross (calf) took live batting practice without issue on Friday, and is expected to return to the Diamondbacks on Monday when rosters expand.
Juan Uribe (hamstring) ran the bases without any pain on Friday, and remains on track to return to the Dodgers lineup when first eligible on Saturday.
Desmond Jennings was a late scratch from the Rays lineup on Saturday due to left knee soreness.
The Mariners have shut down Jesus Montero for the remainder of the 2014 season as they want him to address his non-baseball issues.
Jed Lowrie (finger) will begin his minor league rehab assignment with Triple-A Sacramento on Friday.
Pirates optioned RHP Gerrit Cole to Rookie League Bristol.
Pirates recalled OF/1B Andrew Lambo from Triple-A Indianapolis.
The Cubs plan to use a six-man rotation in the month of September, with Felix Doubront remaining after his spot start on Saturday.