"Huston Street's line of work is about finishing. As it stands, his start will be delayed this spring. After an aggressive batting practice session last Friday, Street hasn't thrown off a mound because of shoulder stiffness.

"It's not a major deal. But it's not minor, either. They are just extra cautious when you have a month before the season starts," Street said Tuesday.

The Rockies' right-handed closer will be sidelined at least through the weekend. He is taking anti-inflammatory pills and remains able to play catch from 90 feet.

Street said the tightness is common for him in spring training. He dealt with the issue twice last year when he was overcompensating for a groin injury."