PHOENIX -- Another day, another roster move for the Diamondbacks. The club optioned pitcher Lance Cormier to Triple-A Tucson and called up reliever Greg Aquino from Tucson.
Cormier had his contract purchased Friday and started Saturday's game. But the right-hander struggled with his command and was pulled after allowing seven runs on six hits in 1 1/3 innings. With the club not needing a fifth starter until June 29, Cormier was sent back to Tucson where he could start on his regular turn.
"Obviously I didn't do my job to stay here," Cormier said. "I got the first [start] over with. That's always a good thing. I fell behind hitters and had to go over the middle of the plate and Major League hitters are going to hit it."
Though Aquino's overall numbers at Tucson aren't pretty -- he is 1-3 with a 6.59 ERA in 20 games -- he's given up just two earned runs in his last 9 2/3 innings.
"We felt like we needed another arm in the bullpen," Arizona manager Bob Brenly said.
This will be the first taste of the Major Leagues for the 26-year-old, who began his career in the D-Backs organization as an infielder before being converted to the mound in 1999.
"I'm so excited," he said. "[The promotion] surprised me."
When the D-Backs do need a fifth starter again, they could turn to veteran Shane Reynolds, who is currently on a rehabilitation assignment. Andrew Good is another candidate to fill the role.
Welcome back: As long as he passes his physical Sunday afternoon, Mike Fetters will once again join the D-Backs organization.
The right-handed reliever was signed to a minor league contract and will join Tucson this week. The Diamondbacks were one of several teams that watched Fetters throw last week.
"He showed real well in his tryout," Brenly said. "He hit 88-89 mph with his fastball and appeared to be in real good shape. He seems to be pretty excited to come back. Needless to say, we could use somebody with a little experience that can throw strikes, and the icing on the cake is his enthusiasm."
It will likely take a little bit of time for Fetters, who had Tommy John surgery last year, to be ready to contribute at the big league level.
Bruney throwing Monday: Reliever Brian Bruney will throw batting practice Monday and then a decision will be made regarding his status.
When he does return to action, the right-hander will pitch from the windup with the bases empty for the first time since high school. Bruney got the idea after watching the Marlins' Josh Beckett.
"I'm certainly not comparing myself in any way to Beckett, but it's something I picked up by watching him," Bruney said. "Just out of the windup I feel like he fools a lot more guys with his pitches than he does out of the stretch. I was looking for a rhythm and hopefully it will straighten out my mechanics and my breaking pitches will get better. We'll see."
Speaking of injured relievers: Oscar Villarreal will join the team on the upcoming road trip.
The right-hander will play catch at a distance of 100 feet Monday and progress from there.
Right-hander Brandon Lyon, who underwent nerve transposition surgery during the spring, has had no problems since beginning his throwing program last week.
Lyon said Sunday the plan is for him to continue to throw two consecutive days and take a day off up until July 11, when he will be re-evaluated.
"After all I've been through the past few months to go out there and feel good the first time out was nice," he said. "It went better than I thought it would."
Reliever Matt Mantei is scheduled to have surgery on his right shoulder performed by team physician Michael Lee on Thursday, though it could happen sooner if there's a break in Lee's schedule.
How long the reliever will be out for depends on how much damage there is to the rotator cuff. If there's not much damage and the labrum is in good shape, he could return in six to eight weeks. If there's significant damage to the rotator cuff or problems with the labrum, he's likely done for the year.
Cintron OK: Shortstop Alex Cintron has a case of patella tendinitis in his left knee, but it did not keep him out of the lineup Sunday.
Steve Gilbert is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.