Nelson Cruz went 1-for-4 with a two-run home run in Tuesday's win over the Pirates.
Hisashi Iwakuma pitched well in Tuesday's win over the Pirates, yielding two runs on six hits over 6 2/3 innings.
Wade LeBlanc will remain in the Mariners starting rotation to start against the Orioles on Friday.
Taijuan Walker (foot) will start against the Orioles on Thursday.
Mariners manager Scott Servais announced Tuesday that Nate Karns has been moved to the bullpen.
Felix Hernandez (calf) is scheduled to throw a 25-to-30 pitch bullpen session off of a mound on Tuesday.
Charlie Furbush (shoulder) is scheduled to throw live batting practice on Saturday.
The Mariners are "leaning toward" having Taijuan Walker (foot) start Thursday against the Orioles.
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.