With the Boston Red Sox in town for four games, the Seattle Mariners bolstered their bullpen back to eight members.
They recalled right-handers Nick Rumbelow and Rob Whalen from Triple-A Tacoma just before Thursday’s game.
Both were added to the Mariners’ 2018 active roster for the first time.
To make room, they optioned first baseman Daniel Vogelbach to the Rainiers for the third time and designated right-hander Mike Morin for assignment.
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Morin’s move sets the Mariners’ 40-man roster at 39 players and gives them seven days to trade, release or outright his contract to the minor leagues.