SCOTTSDALE, Ariz.

Chris Young tossed shutout ball in his Seattle debut Saturday, providing a much-needed pitching boost for the Mariners as they closed spring training with a 2-1 loss to the Colorado Rockies.

Kyle Seager’s run-scoring single in the second was the lone run off Rockies starter Franklin Morales. He worked around five walks and three hits in 5 1-3 innings, a day after he was selected as the fifth starter.

Seattle newcomer Robinson Cano struck out and flied out before exiting in the third, finishing with a .412 spring average.

Brandon Barnes’ single off Joe Beimel in the seventh drove in a run to snap the tie.

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Control issues have hurt Morales in a few spring outings.

“He still has enough stuff where he can deal with some traffic and strike guys out,” manager Walt Weiss said. “But he didn’t have good command (Saturday).”

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The Rockies set their roster, confirming they’re keeping six outfielders (Barnes, Charlie Blackmon, Michael Cuddyer, Corey Dickerson, Carlos Gonzalez and Drew Stubbs). Infielder Paul Janish was released.

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Rockies right-hander Tyler Chatwood was confident what he called a “minor” left hamstring strain wouldn’t keep him from Wednesday’s start.

“I think I’m fine,” Chatwood said.

Chatwood said he slipped on some loose dirt while running out a triple Friday against Seattle.

But Chatwood had no regrets.

“It’s just how I was raised to play,” Chatwood said.

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Right-hander Jhoulys Chacin (shoulder) is scheduled to stay in Arizona and throw 20-25 pitches in a batting practice Monday. Chacin is expected to return in early May.

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Due to a hotel issue, the Rockies were not leaving for Miami until Sunday morning to play the Marlins in their opener Monday.