DENVER -- The Rockies have pushed left-hander Drew Pomeranz's next start from Wednesday to Sunday because of soreness in his chest. Manager Jim Tracy announced after Tuesday night's game that right-hander Guillermo Moscoso, who was scratched from his start at Triple-A Colorado Springs on Monday, will be recalled as a replacement for Wednesday's finale against the Brewers. Moscoso, who has been up and down between the Rockies and Colorado Springs, will be asked to lead the Rockies to a three-game sweep. The Rockies will clear a 25-man roster spot for Moscoso before Wednesday's game. Moscoso is 0-1 with an 8.23 ERA in 10 big league appearances, including two starts. He also is 8-5 with a 6.25 ERA in 16 games, all starts, for Colorado Springs.
The move illustrated the delicate balance the Rockies are trying to achieve with Pomeranz, 23, who is in just his second pro season. Pomeranz (1-7, 5.04 ERA) has thrown a combined 111 1/3 innings between the Minors and the Majors this season, after throwing 119 1/3 in the Minors and Majors last year. The Rockies, who obtained Pomeranz from the Indians in last summer's Ubaldo Jimenez trade, want to limit his innings load but Tracy said there is value in Pomeranz becoming accustomed to the length of the season. Pomeranz has dealt with on-and-off soreness and has yet to learn to how navigate a Major League game when he isn't feeling at his best, either physically or with the action of his pitches. "As a young kid that's learning all about the nuances of pitching at the Major League level and distinguishing between soreness and pain. Those are things that you go through as a young pitcher," Tracy said. "He's a young kid and we're keeping an eye on where he is innings-wise in relation to where he's been in the past. But in my opinion there's somewhat of a delicate balance. "The other thing is them understanding that the season doesn't end at the end of August. You want your seasons to be ending late in October. Hopefully you play the very last game of the year. There has to come an understanding of that. I guess the best way to put it is you push, but you push with caution."