DENVER -- Things could hardly have been going better for the D-backs with one out in the bottom of the sixth inning Saturday night.

They were handily beating the Rockies thanks to a big night at the plate from Geraldo Perdomo, and Tommy Henry was cruising on the mound.

But things changed immediately after Ryan McMahon’s double bounced off the left-field wall.

It wasn’t that the Rockies scored a run on the play, it was that Arizona outfielder Corbin Carroll was lying on the Coors Field warning track not moving after crashing into the wall. Center fielder Alek Thomas fielded the ball and threw it back in, then immediately went to check on Carroll.

In the dugout, manager Torey Lovullo thought his heart had stopped and he began to race out with a pair of D-backs athletic trainers.

“He wasn't saying much when I got out there,” Lovullo said. “But the first thing I heard him say was, ‘I think I'm gonna be all right.’”

Indeed it appears the D-backs may have caught a break as initial indications are that Carroll has a left knee contusion, but there does not appear to be any other damage. In fact, Lovullo said the initial evaluation by the trainers was so encouraging that no MRI or similar type test is planned at this point.

Carroll is day to day for now, and that is even better news for the D-backs than their eventual 11-4 win over the Rockies.

“You never want to see that for any player,” Henry said of his reaction when Carroll went down. “Especially Corbin, though, the hardest worker I know, the best guy and obviously a huge centerpiece to our team. And so you kind of hold your breath when you see him go down. It's just [typical] Corbin, going all out for a ball, doing anything he can to make a play. We’re glad he’s OK.”

Carroll raced back to the wall on the play, jumped and his left knee appeared to hit the wall solidly, and as soon as his feet hit the ground, he crumpled to the warning track.

“You see an athlete down on the field like that, you're very concerned,” Lovullo said. “I thought it was a shoulder, a back, a knee, a broken ankle, and as we were piecing it together, the news got better and better and better. I made the decision to take him out of the game after getting the input from the medical team. Corbin was trying to stay in the game. I just told him, 'Let's get you in there and get you evaluated and see how we're doing and live to fight another day.'”

Meanwhile, Henry had been cruising to that point in the game, allowing just one run through the first five innings, while Perdomo continued his hot start to the year, going 3-for-5 with four RBIs.

It was quite a comeback for Perdomo, who had a poor first at-bat in the game.

Josh Rojas led off the game with a double, and rather than find a way to hit the ball to the right side of the diamond to move Rojas to third, Perdomo swung at the first pitch and flied out to shallow left and Rojas could not advance.

Perdomo approached Lovullo in the dugout right after.

“Before I even had to have a conversation with him, he came to me and we had a discussion,” Lovullo said. “He laid it out perfectly. And to me that's what a good player does -- he takes accountability. He told me that he made a mistake and then we outlined how to get better at it and obviously it worked out well.”

One inning later, Perdomo broke the game open and capped a six-run rally with a one-out, three-run homer to right field.