Zach Pop has chance to make Mariners debut soon

The Mariners announced they’ve selected righty reliever Zach Pop onto the big league roster. Rookie starter Logan Evans was optioned back to Triple-A Tacoma to create an active roster spot. Seattle had two openings on the 40-man roster.

Pop will make his team debut whenever he gets into a game. He joined Seattle in mid-April on a minor league deal. That came after he was released by the Blue Jays. Pop was battling elbow inflammation at the time, but he got back on the mound by the middle of May. He made two rehab appearances in the complex league before reporting to Tacoma. Pop has made 11 appearances and tossed 9 2/3 innings, allowing seven runs (though only three were earned). He has fanned nine against five walks.

The 28-year-old Pop has pitched in parts of four MLB seasons. He threw 48 1/3 frames for the Jays last season, working to a 5.59 ERA with a well below-average 15.8% strikeout percentage. Pop doesn’t have huge swing-and-miss stuff, but he sits around 96 MPH with his sinker and has posted a gaudy 55% ground-ball rate in his career. He’ll add a grounder specialist to Dan Wilson’s middle relief corps for the time being. He’s out of minor league options, though, so the M’s would need to designate him for assignment to take him off the big league roster.

Seattle can operate with an extra reliever for this weekend’s series against the Guardians. Luis Castillo, George Kirby and Emerson Hancock are lined up to start those games. Adam Jude of The Seattle Times writes that Logan Gilbert is expected to return from the injured list during next week’s series against the Red Sox, at which point Seattle will go back to five starters and an eight-man bullpen. Gilbert has been down since late April with a flexor strain. He has made a trio of rehab starts with Tacoma, combining for 9 2/3 innings of three-run ball.