Jhoulys Chacin getting MRI on sore right shoulder - HardballTalk

So, uh, this is some pretty disturbing news for the Rockies …

RHP Jhoulys Chacin will undergo a MRI tomorrow because of right shoulder inflammation. He will be shut down until further notice.

— Colorado Rockies (@Rockies) February 23, 2014

Our own Matthew Pouliot estimates that Chacin is the third-most important player on Colorado’s roster, behind only Troy Tulowitzki and Carlos Gonzalez, and notes that the rotation without him goes Jorge De La Rosa, Tyler Chatwood, Brett Anderson, Juan Nicasio, then either Jordan Lyles or Franklin Morales.

The Rockies have a nice-looking offense, but it’s hard to see them competing with that group of starters.

Chacin, 26, posted a 3.47 ERA, 1.26 WHIP, and 126/61 K/BB ratio across 197 1/3 innings last season.

Follow @drewsilv

ATLANTA — An apparent roster snafu forced the Toronto Blue Jays to change their pitching plans for Thursday night’s game at the Atlanta Braves.

After Nate Pearson gave up three runs in five innings, manager Charlie Montoyo brought in right-hander Jacob Waguespack to open the sixth.

As Waguespack walked to the mound, he was greeted by home plate umpire Alan Porter, who apparently delivered some bad news: The right-hander wasn’t on the 28-man active roster for the game.

The Blue Jays optioned Waguespack and infielder Santiago Espinal to the team’s alternate training site on Thursday to reach the 28-man roster limit.

Montoyo told reporters before the game Waguespack had been recalled when right-hander Trent Thornton was placed on the 10-day injured list with right elbow inflammation. That move apparently was not processed, leaving Waguespack off the active roster.

Waguespack walked to the dugout and Montoyo brought in Rafael Dolis as the official replacement for Pearson.