New York Mets

ESPN.com reports Tuesday that Mets manager Terry Collins expected Scott Atchison to land on the 15-day disabled list, after he injured his groin warming up for the day's game against the Braves.

Atchison was set to appear in his first game in over two months, but suffered a right groin injury during warm-ups prior to his appearance. The team has yet to officially announce his placement on the disabled list, but are expected to do so prior to Wednesday's game if it happens. 

"The second warm-up pitch I felt a little tug in my groin," Atchison said. "I tried to throw another one and felt it pulling some more. Basically, I can't push off. It's on the right side. I couldn't go. It's frustrating, obviously. My arm felt great. I felt good. I hadn't had any signs of this."

The Mets promoted outfielder Andrew Brown from Triple-A Las Vegas Tuesday. A corresponding move will be announced prior to Wednesday's game against the Braves, according to ESPN.com.

Brown hit .200 in six games with the Mets earlier in the season, with one home run and two RBI in 15 at-bats.  

The Mets designated outfielder Collin Cowgill for assignment Tuesday to make room on the 40-man roster for the acquisition of Eric Young from the Rockies.

Cowgill batted .173 with a .516 OPS in 52 at-bats. 

The Mets traded pitcher Collin McHugh to the Rockies Tuesday in exchange for outfielder Eric Young. McHugh and Young recently were designated for assignment, so neither team loses a player from the active roster.

McHugh has a 10.29 ERA in seven major-league innings this season, while Young hit .242 with a .642 OPS in 165 at-bats for the Rockies.

If Mets' pitching prospect Zack Wheeler had one obstacle to overcome in his battle to reach the majors, it was his control. In his major-league debut, that issue cropped up a few times, but Wheeler overcame his shaky command to earn a 6-1 win over the Braves.

Wheeler walked two batters in the first inning and five overall in six innings, but limited Atlanta's big-swinging offense to just one extra-base hit. Wheeler allowed four hits overall while striking out seven, though he threw just 55 of 102 pitches for strikes.

Wheeler didn't allow a run, and he picked up 14 of his 55 strikes via swings and misses. Wheeler is expected to be optioned back to Triple-A Las Vegas after the game, but he'll be recalled for his next turn in the rotation, scheduled for June 25 at the White Sox.