DENVER -- It appears the stare-down between D-backs outfielder Gerardo Parra and Rockies left-hander Jorge De La Rosa in Saturday's game may have its origins earlier in the contest.

With one out in the fifth, Parra drew a walk and appeared to stare at De La Rosa before heading to first. That prompted the pitcher to have some words for Parra. That's as far as things progressed.

According to several people in the D-backs' clubhouse, there was unhappiness with the way De La Rosa reacted to an inside pitch earlier in the game and the D-backs felt he then hot-dogged the base hit he got in the fourth that drove in a run.

De La Rosa said he did not know what prompted Parra to stare at him and Parra did not have much to say on the matter.

D-backs manager Kirk Gibson said he didn't know what precipitated the situation, but loved the fire that Parra and the rest of the squad has shown so far this year.

"I told these guys we want to stand up for our turf," Gibson said. "I'm not exactly sure what happened, but if you're competing and you're intense and things like that happen, there's no problem with that at all. I'd certainly rather see that than the opposite.

"There's parts of the game where things happen you don't need to be screaming at people or somebody hits you or whatever. Go do something about it. It's not a real chirp thing. If somebody says something, you say something back and take your base, and if they want to come get you, they come get you and you want to go get him, go get him, but say it and move on."