RHP Chasen Bradford, who the Mets designated for assignment earlier this week to make room on the 40-man roster for Jay Bruce, has been claimed by the Mariners.
RHP Kevin McGowan, who was designated for assignment to make room for Adrian Gonzalez, cleared waivers and has been outrighted to Triple-A Las Vegas.
Bradford, 28, had a 3.74 ERA and 1.27 WHIP with 27 strikeouts in 33.2 innings last season, during what was his major league debut.
McGowan allowed five runs on eight hits across 8.2 innings of relief last season. He walked six batters and struck out eight. He made his major league debut in August when the Mets hosted the Diamondbacks at Citi Field.
The 26-year-old spent the last four seasons progressing through the Mets' farm system after he was selected in the 13th round of the 2013 MLB Draft.