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03/14/2013 1:35 AM ET

Delgado makes strong audition for rotation

SCOTTSDALE, Ariz. -- Randall Delgado had his second straight impressive outing Wednesday night as he threw four shutout innings against the Brewers.

Delgado, who came over from the Braves in the Justin Upton trade, is competing with Patrick Corbin and Tyler Skaggs for the No. 5 spot in the rotation.

"That's as good as we've seen this spring out of our staff," D-backs manager Kirk Gibson said of Delgado. "He looked really good, had good velocity, all his pitches were working. He got into some trouble early and got out of it. That's the kind of guy that we were hoping we'd get."

The game did not start out smoothly for Delgado as he found himself in a jam with runners on second and third with one out in the first. He maintained his poise, though, and fanned Carlos Gomez and Alex Gonzalez to end the threat.

"I just wanted to keep under control," Delgado said. "I think [that] was the key, I tried to keep concentrating on the pitches."

After not looking very good in his first two appearances of the spring, Delgado began to show signs in a rain-shortened outing against the Angels last Friday when he threw 1 2/3 scoreless innings.

"He was probably a little excited when he first got over here," Gibson said of Delgado's first two outings.

Gibson praises Paterson's work this spring

SCOTTSDALE, Ariz. -- Coming into Spring Training, it seemed Joe Paterson did not have much of a chance to make the D-backs' Opening Day roster.

Paterson still faces an uphill battle, but the left-hander received a ringing endorsement from Arizona manager Kirk Gibson on Wednesday.

"We're really happy with the way he's throwing and what he's done this [spring]," Gibson said. "He's got the greatest attitude on the team, too. I have confidence in what he's doing now."

With a scoreless inning of work Wednesday night, Paterson has allowed just one earned run in 6 2/3 innings (1.35 ERA) this spring.

Gibson had a lot of confidence in Paterson in 2011 when he was the D-backs' left-handed specialist and compiled a 2.91 ERA in 62 appearances.

Last year, though, Paterson struggled with his command and in six games compiled a 37.12 ERA and was sent to Triple-A Reno where he spent the rest of the season.

"He's certainly somebody that's going to play for us this year," Gibson said. "Definitely."

Steve Gilbert is a reporter for MLB.com. Follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.