Voth (1-0) got the win over Atlanta on Monday, allowing a hit and striking out the side over one inning.
Voth signed a one-year, $1.25 million contract with the Mariners on Wednesday, Robert Murray of FanSided.com reports.
Voth cleared waivers and was outrighted to Triple-A Norfolk on Tuesday, Steve Melewski of MASNSports.com reports.
The Orioles designated Voth for assignment Sunday.
Voth (elbow) was activated from the 60-day injured list Wednesday, Rich Dubroff of BaltimoreBaseball.com reports.
The Orioles transferred Voth (elbow) to the 60-day injured list Monday.
Voth (elbow) will move up to Triple-A Norfolk on Thursday as he continues his rehab assignment, Andy Kostka of TheBaltimoreBanner.com reports.
Voth (elbow) began a rehab assignment with the Orioles' Florida Coast League affiliate Thursday.
Voth (elbow) has been throwing side sessions at the Orioles' complex in Florida, Rich Dubroff of BaltimoreBaseball.com reports.
Voth (elbow) resumed throwing Monday on flat ground, Danielle Allentuck of TheBaltimoreBanner.com reports.