Mariners: An MRI showed RHP Erik Swanson’s strained right groin is more seriously injured than the team hoped. The reliever could be out longer than 10 days, Servais said. Swanson strained the muscle before his May 28 appearance, but pitched through it and aggravated it further. Seattle has 15 players on the injured list.
Rangers: RHP Dane Dunning (2-4, 4.75) takes the mound at Colorado on Tuesday after giving up a career-high seven runs in his last start.
Mariners: Rookie RHP Logan Gilbert (0-2, 7.59) makes his fourth career start. He faces Oakland again five days after his best outing, giving up two runs on four hits over four innings in a no-decision against the Athletics.
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