Rockies catcher Yorvit Torrealba was scratched from Thursday's game against the Arizona Diamondbacks and replaced by Chris Iannetta.
Colorado says Torrealba is being evaluated by the medical staff for an undisclosed injury.
The team also announced during the game that it had purchased the contract of catcher Adam Melhuse from the Triple-A Colorado Springs Sky Sox.
Melhuse hit .317 with three homers and 14 RBIs in 29 games with the Sky Sox.
The Rockies optioned outfielder Cory Sullivan to their top farm club to make room for Melhuse.
Posted: 08/06/2013 - Even if you don't plan to workout on your vacation, you may be surprised at the calories you're burning without even trying!
Updated: 06/18/2013 - We did a quick helicopter tour of the Black Forest burn area. Someone asked why the video looks shaky.
Updated: 05/20/2013 - Two weekends left to catch one great show!
Updated: 05/14/2013 - I'm still focused on meeting my goal of doing a pull-up. And I'm almost there! But I'm always getting this question: