Arenado sits as Rox await word on MRI on chest

Third baseman sits out opener vs. Dodgers; Morneau returns to lineup

Arenado sits as Rox await word on MRI on chest

DENVER -- Third baseman Nolan Arenado's right chest contusion kept him out of the Rockies' starting lineup Monday against the Dodgers. The team was awaiting MRI results but doesn't believe the injury is serious.

Arenado, a prime candidate to win his second consecutive Gold Glove Award after winning it last year as a rookie, originally hurt his chest last week while making a play against the Mets at Citi Field. He experienced more pain while diving unsuccessfully for Yadier Molina's ground single during Sunday afternoon's 4-1 loss to the Cardinals at Busch Stadium.

Manager Walt Weiss said the Rockies "don't anticipate him missing much time."

First baseman Justin Morneau returned to the lineup Monday after missing two games with a slight strain in his left lat area.

Thomas Harding is a reporter for MLB.com. Read his blog, Hardball in the Rockies, and follow him on Twitter @harding_at_mlb. This story was not subject to the approval of Major League Baseball or its clubs.