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The Mariners announced that they have selected the contract of left-hander Tommy Milone. Right-hander Darren McCaughan was optioned in a corresponding move while righty Penn Murfee was transferred to the 60-day injured list to open a spot for Milone on the 40-man. Milone is listed as the club’s starter for tonight’s game in San Francisco.

Milone, 36, has plenty of major league experience, serving as a regular rotation member with the Athletics and Twins in the early parts of the previous decade. In more recent years, he’s been in the role of a journeyman depth piece. Since the start of 2020, he’s suited up for Atlanta, Baltimore, Toronto and Seattle, not reaching 40 innings in any of those campaigns.

He’s already played this game with the M’s once this year, getting called up in April, making one start and getting designated for assignment promptly after. He tossed 4 2/3 innings in that outing, allowing just one earned run on three hits and two walks while striking out three. He’s spent most of the season in Triple-A, making 11 starts there with a 4.47 ERA.

The Seattle rotation lost Bryce Miller to the injured list this week and needs another arm to be slotted next to Luis Castillo, George Kirby, Logan Gilbert and Bryan Woo. It’s possible that this will be another one-and-done situation for Milone, since Miller’s IL placement was due to a blister and the All-Star break is coming up on Monday. Assuming Miller’s blister is healed up, he’ll be eligible to come off the injured list after the break and retake his rotation spot.

As for Murfee, it was reported last week that he would require season-ending UCL surgery, making this transfer an inevitable formality. He’ll spend the rest of the year on the 60-day injured list and won’t count against the club’s roster count, though he’ll need to be reinstated during the offseason when there’s no IL.

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