Franklin Gutierrez clobbered a three-run home run in a losing effort against the Cardinals on Sunday.
James Paxton was touched up for five runs on eight hits over five frames in a no-decision against the Cardinals.
Nate Karns surrendered four runs on five hits and two walks while striking out three in five innings, leading the Mariners to a 5-4 victory over the Cardinals on Saturday.
Steve Cishek worked around a one-out double in the ninth inning to protect a one-run lead and nail down his 17th save.
Leonys Martin laced three singles in five chances and scored a run on Saturday.
Charlie Furbush (shoulder) has resumed throwing bullpen sessions.
Mariners manager Scott Servais said Friday that Felix Hernandez (calf) continues to show improvement.
Adrian Sampson will require season-ending surgery to reattach the flexor bundle in his right elbow.
Wade Miley (shoulder) tossed four perfect innings Friday in a minor league rehab start with Low-A Everett.
Adam Lind delivered a three-run homer in the bottom of the ninth to give the Mariners a 4-3 win over the Cardinals on Friday.
Wade LeBlanc shut out the Cardinals for six innings Friday in his return to the majors.
Kyle Seager reached base all four times he was up Friday, going 2-for-2 with a double and two walks.
Mariners transferred RHP Tony Zych from the 15-day disabled list to the 60-day disabled list.
Mariners purchased the contract of RHP Donn Roach from Triple-A Tacoma.
Mariners placed RHP Adrian Sampson on the 15-day disabled list with a right flexor bundle strain.