"It's definitely a concern anytime you have one of your star pitchers go down and have something sore," Manager
Alvarez (0-2) sat out the first half of the 2013 season because of shoulder inflammation. He had a stint on the disabled list last August because of a shoulder issue.
Alvarez was 12-7 with a 2.65 earned-run average last year and was an All-Star.
Miami also put backup catcher Jeff Mathis and reserve infielder
LaTroy Hawkins is out as
LaTroy Hawkins is being moved out of Colorado's closer role for now, but Manager
Weiss called it a "breather" for Hawkins, 42, who is planning to retire after this season.
"We'll do that for the time being," Weiss said. "We'll mix and match. We have some pieces that can pitch late. The stuff is still very much intact with Hawk. We'll give him a little breather."
Hawkins blew a save opportunity in Colorado's 6-5 loss to the Chicago Cubs on Sunday at Coors Field, surrendering a two-run home run to former Rockies outfielder Dexter Fowler with two outs in the ninth.
Rob Manfred comments on
Commissioner Rob Manfred says Major League Baseball is investigating four recent positive tests for the steroid Stanozolol along "the same model" as its 2013 Biogenesis probe.
Mejia's discipline came after positive tests and suspensions for Minnesota pitcher