SAN FRANCISCO -- Chris Young was prepared for the worst Tuesday morning when he tested out his right quadriceps muscle.

"This morning I thought I was going to wake up and it was going to be real sore, and it wasn't too bad," Young said. "I haven't run or anything, but hitting is fine and range-of-motion stuff is fine, so I don't think it's anything serious. Just a little nagging injury, and I'll try to get it right as soon as I can."

Young felt the quad "grab" while running to first base in the eighth inning Monday afternoon.

D-backs manager Kirk Gibson said it was likely that Young would be out three to seven days, so the club brought up outfielder Adam Eaton from Triple-A Reno.

Eaton has hit at each level in the Minors, and the remaining weeks of the season provide an opportunity for the D-backs to get an extended look at him.

Young said he has not thought about what Eaton's promotion might mean for his playing time.

"Not really my call," Young said. "The team is free to do whatever they think is right. As far as I know, we're still trying to win games and that's all we're focusing on right now. I don't really think about anything any deeper than that."

D-backs bring up Eaton for Major League debut

SAN FRANCISCO -- Adam Eaton had just finished watching the D-backs and Giants game Monday night when his phone rang.

It was farm director Mike Bell, who wanted to let Eaton know that he was getting called up to the big leagues for the first time. Eaton, who was hitting .381 with a .995 OPS (on-base plus slugging percentage) for Triple-A Reno, could not get a flight to San Francisco in time, so he and his fiancee, Katie, got in the car and drove.

Traffic delayed their journey, but Eaton made it to AT&T Park on time for batting practice.

"It was time to think about it, and Katie and I had some good talks about this journey," Eaton said. "It's been a journey, that's for sure. Most people only think from college, but for me and my family, we really think back almost to when I could start walking. This kind of brings it all together. Just memories, growing up when you're the smallest kid and you don't know if you can do this and this and this, and to make it to the big leagues, it kind of all comes together."

Undersized at 5-foot-8, the 23-year-old was not selected until the 19th round of the 2010 First-Year Player Draft.

Eaton showed he could hit at every level of the D-backs' system, and the team had planned on calling him up when Reno's playoff run ended. However, when center fielder Chris Young suffered a quad injury Monday, the timetable got moved up.

"Very deserving for this opportunity," D-backs GM Kevin Towers said of Eaton. "I like the way he plays the game. He plays a very intense game both defensively and offensively, gives us some speed at the top of the lineup, so we'll see."

A strong showing in September could certainly put Eaton in a good position to earn a spot in the outfield next year.

"We've got a lot of outfielders," Towers said. "It puts him in a position for the last month to get into some games going against the Dodgers and Giants, a couple of contending clubs. It will be good experience for him and we'll worry about 2013 at the end of 2012, but it will be nice to see how he handles big league competition both offensively and defensively."

Eaton had an eventful debut. He struck out to leadoff the game, but did manage to go 2-for-6 in the 11-inning win. He collected his first Major League hit, a double in the fourth inning off Ryan Volgelsong.

When he got to second, he looked up into the crowd and saw his family and fiancee, which made him think back to his road to the big leagues.

"It just seemed like it all flashed in front of my eyes," Eaton said.

D-backs pondering rotation shuffle

SAN FRANCISCO -- The D-backs have not decided yet, but it sounds like left-hander Patrick Corbin's next start could be pushed back.

The D-backs will stay in rotation and have Tyler Skaggs and Wade Miley start Friday and Saturday. Sunday would normally be Corbin's spot, but because of Thursday's off-day, they can bring Ian Kennedy back on regular rest for that day.

The D-backs have been talking about splitting up their left-handers because right now they have all three of their southpaw starters going back-to-back-to-back.

Pushing Corbin back would help the club limit his innings, and with two off-days next week, they could further reduce the workload of some of the younger pitchers.

"Kind of looking to see what the best way to tinker with that would be so we would be well within our comfort zone," D-backs manager Kirk Gibson said, referring to how many innings the hurlers would throw.

Overall, though, there has not been a concern about the amount of innings that have been thrown thus far.

"The reality as I look at all of our starters, their arms, their health and the way they throw the ball, I don't see a ton of fatigue," Gibson said. "I feel pretty good where they're at."