Seattle Mariners in MLB: showing 1–48 of 261. Number is games played.

• Austin AdamsSeattle Mariners, RP302019
• Ty AdcockSeattle Mariners, RP122023
• Dan AltavillaSeattle Mariners, RP682017–2019
• Kade AndersonSeattle Mariners, SP72026
• Shawn ArmstrongSeattle Mariners, RP142018
• Randy ArozarenaSeattle Mariners, LF4822024–2026
• Michael ArroyoSeattle Mariners, SS152026
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