LOS ANGELES -- It was a phone call that Joe Paterson had been waiting for since April of last year.

Paterson on Monday was promoted from Triple-A Reno to take the place of injured left-hander Matt Reynolds.

Paterson was a key contributor on the 2011 National League West champion D-backs but struggled mightily in April last year and was demoted to Reno on April 23 with a 37.12 ERA.

"It's been a long time," Paterson said. "It just kind of came out of the blue, so it was very exciting."

Paterson pitched well this spring and was one of the final roster cuts before Opening Day. His strong showing in March likely put him back on the team's radar and made this promotion possible.

"I think really this offseason I was so locked in to that and getting back [to the Major Leagues] and kind of putting everything out of my mind that wouldn't help with that," Paterson said. "So I think that's really helped me because when I felt like I had a good spring but I didn't make the team, it didn't affect me at all. So I think that's kind of been a big steppingstone for me in, I guess, my progression to make it back to the Major Leagues."

Paterson was 2-1 with a 2.36 ERA in 24 games with Reno, and he attributed that to his ability to keep his focus and stop putting so much pressure on himself.

"Little things aren't really too concerning for me right now," he said.

Skaggs sent down in favor of bullpen arm

SF@ARI: Skaggs strikes out Crawford with bases loaded

LOS ANGELES -- Tyler Skaggs was optioned to Triple-A Reno on Monday, one day after allowing five runs in five innings to the Giants.

Skaggs made two starts in his stint with the D-backs and was unable to recapture the success he had last month when he held the Rangers scoreless for six innings in Game 2 of a doubleheader.

Due to some short starts recently from the rotation, the D-backs could not afford to be patient with Skaggs and had to add some arms to the bullpen, calling up right-hander Charles Brewer from Reno.

"I feel fine," Skaggs said. "I felt like I was throwing the ball well. Last start wasn't what I wanted. It is what it is. I think I need to go down and work on some things. I still thought I threw the ball well, but it's just one of those things where got to help out the bullpen."

D-backs manager Kirk Gibson likened Skaggs situation to Patrick Corbin's last year when each time he came up to the big leagues he pitched better and better.

"Ultimately he's just got to strive for more consistency with his pitch location," Gibson said. "One of the things I told him was that part of it is a byproduct of the schedule and what our needs are right now. Every time you come up you should be a little more comfortable and have a little more of an understanding of what you need to do to be successful and hold guys down here. He'll go down and throw the ball and keep his confidence. I'm sure we'll need him in the future."

Said Skaggs, "Mentally it's tough, it's tough to really keep confident, but I feel like I'll be all right. I'm a tough kid so I'll be OK."

Brewer called up, excited to join hometown club

ARI@LAD: Brewer make impressive MLB debut vs. Dodgers

LOS ANGELES -- Charles Brewer was eating sushi Sunday night in Reno, Nev., when his cellphone rang.

It was his Triple-A manager Brett Butler and his message was short and sweet.

"He just said, 'Son, it's Bugsy, you're going up to the big leagues,'" Brewer said. "I wasn't too hungry after that. I was busy making some phone calls to the family and whatnot. I got a couple of sushi rolls to go, though."

With an overtaxed bullpen, the D-backs decided to add a reliever, so they promoted Brewer and optioned left-hander Tyler Skaggs to Reno.

"We had to freshen up a little bit," D-backs manager Kirk Gibson said of his bullpen.

Brewer, who was 3-6 with a 5.85 ERA in 12 starts for Reno, will pitch out of the bullpen for now. The team will skip Skaggs' turn in the rotation, so it will not need another starter until June 18. Josh Collmenter and Brewer are candidates for the start as well as possibly Randall Delgado, who is in Reno.

Regardless of how long his stay is, Brewer will cherish it. A native of Scottsdale, Ariz., Brewer grew up a fan of the D-backs.

"Ever since I was a 12-year-old kid in 1998 when the team first became a franchise, I was at that ballpark," Brewer said. "We had season tickets every single year when I was growing up. I made it to all seven World Series games in 2001, so it's a huge deal for me to be here with the team and put on that same uniform I've always seen from the stands growing up."

Reynolds lands on DL with left elbow strain

SF@ARI: Reynolds fans the side in the seventh

LOS ANGELES -- The D-backs placed left-hander Matt Reynolds on the 15-day disabled list with a left elbow strain.

Reynolds struggled a bit in his last two outings, allowing a pair of home runs Thursday in St. Louis and then a run in one inning of work Sunday.

"He's had kind of a cranky arm," D-backs manager Kirk Gibson said. "The bullpen and the way we've been using it, we tried to trim him out as much as we could, but after he had more discomfort yesterday, we got to the point where we need to kind of examine it a little more closely."

Reynolds was scheduled to have an MRI taken Monday and then see team physician Michael Lee on Tuesday.