06/12/12 8:56 PM ET
Rox hope Guthrie catches on with Nieves
By Thomas Harding / MLB.com
Nieves caught a bullpen session for Guthrie in which infielders Chris Nelson and Eric Young Jr. stood in as hitters, and caught another throwing session. So manager Jim Tracy started Nieves on Tuesday."[Rookie Wilin] Rosario has done the bulk of the catching during the games, so Nieves has been with him through all of that [practice]," Rockies manager Jim Tracy said. "We just want to match him up with Guth and see where it goes." Nieves, 34, said it's just a matter of keeping everything simple.
- 142 wins
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Surging Colvin remains in lineup
DENVER -- Rockies manager Jim Tracy didn't hesitate to start Tyler Colvin in center field on Tuesday night against the Athletics. Colvin went 6-for-8 with three home runs, a double and five RBI in his last two games.Dexter Fowler would normally start in center, but not with Colvin this hot. And Colvin kept right on going against the A's, hitting a leadoff homer against Bartolo Colon.
"I'm not down on what Dexter has done," Tracy said. "He got hotter than the Fourth of July [during the team's last homestand], yet when you look at what Tyler Colvin has done the last couple of days with three home runs hit in the last couple of ballgames, a three-hit game on Sunday, you can't come in and not write his name down."Colvin hit .276 with 20 home runs and 56 RBIs as a rookie with the Cubs in 2009, but bottomed out to .150 last season and found himself traded to the Rockies during the winter. Colvin said he is better at approaching his part-time role this year. "I know I feel good, so I'm being ready, having a good approach and sticking with that, not worrying about anything else," Colvin said. "When I get those opportunities I'm not going to try to do too much. When I get my opportunities, I'm going to stick with going the opposite way."
Rox send Rogers to Indians
DENVER -- The Indians will try to unlock the mystery of right-hander Esmil Rogers.The Rockies sent Rogers to the Indians on Tuesday for cash considerations. Rogers, 26, was 0-2 with an 8.06 ERA in 23 relief appearances this season.
The numbers don't begin to explain a maddening pattern of showing a fastball capable of 97 mph and a slider that can dominate, but within the same outing, melting down and not being able to halt the damage."I can't sit here and tell you I have the answer to that," Rockies manager Jim Tracy said. "We've seen hints of brilliance from him and the highs and the lows. The middle ground part of it is something he hasn't reached. Will that surface? Time will tell." The Rockies designated Rogers for assignment Saturday to make room for left-handed pitcher Jeff Francis.
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.