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04/05/2013 8:20 PM ET

Eaton swinging bat as he eyes return from elbow injury

MILWAUKEE -- Adam Eaton hit off a tee for the second straight day Friday just two weeks after being placed on the disabled list with an injured left elbow.

Eaton is still a ways away from throwing, but after 14 days of not doing any baseball activities, he was thrilled.

"I feel more athletic now that I can actually do some swinging," Eaton joked. "Everything is going really well."

On Saturday, Eaton is slated to hit some soft toss and hopes next week to get into some extended spring games where he would only hit and not play in the field.

The D-backs said at the time of the injury that Eaton was expected to be out six to eight weeks.

Collmenter declares himself available if needed

MILWAUKEE -- Some of Josh Collmenter's teammates jokingly told the D-backs right-hander that he really didn't need to come to Milwaukee with them.

Given that Collmenter bailed the team out of a jam by tossing five innings of relief in the D-backs' 16-inning win over the Cardinals on Wednesday night and throwing 78 pitches in the process, the chances he would pitch in this weekend's series with the Brewers seemed remote.

However Collmenter played catch before batting practice Friday and pronounced himself ready to go.

"I actually feel really good," Collmenter said. "Playing catch my arm just felt a little heavy at first, nothing different than a normal throwing session. I could pitch tonight if need be."

If Arizona manager Kirk Gibson has anything to say about it, though, it will be a restful trip to Milwaukee for Collmenter.

"I wouldn't use him today," Gibson said. "I'd have a hard time using him maybe an inning on Sunday."

Collmenter has not had any issues with his throwing arm and speculates that it's because his exaggerated over-the-top delivery puts more strain on his shoulder and less strain on his elbow. Strengthening the shoulder is easier than strengthening the elbow, which helps him stay healthy.

"One of the things that I like about being in the bullpen is the ability to be able to do stuff like that, to throw multiple days in a row and just be prepared at all times," Collmenter said. "So I just wanted to make sure that regardless of if they're trying to stay away from me for a day or two, I still want to be ready just in case I might be needed."

Corbin was ready to pitch, bat, play outfield on marathon night

MILWAUKEE -- Patrick Corbin did not actually get into the D-backs' marathon 16-inning game against the Cardinals on Wednesday night, but the left-hander was prepared to contribute in a number of different roles if needed.

The D-backs were down to Corbin and Heath Bell as far as pitching possibilities, and there was also the chance that manager Kirk Gibson could have used Josh Wilson as an emergency pitcher and put Corbin, an excellent athlete, in left field.

"I was thinking I was going to pinch-hit," Corbin said. "Then they said I might have to play outfield. Wade [Miley] brought out his outfielders mitt and it's terrible, so Cody [Ross] gave me his. Then they said I might have to pitch. I said I could throw an inning."

Corbin is slated to make his first start of the year Saturday against the Brewers, but heading into Friday's game he knew that he was still on call.

With Josh Collmenter unavailable after throwing five innings Wednesday, Corbin was told to be ready on Friday if for some reason Wade Miley got knocked out of the game early.

Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.