Tensions rose between members of the Broncos and Texans during the teams' joint practice on Thursday, according to reports.
Broncos cornerback Chris Harris said he thought the dissension stemmed from the Texans celebrating safety D.J. Swearinger intercepting Broncos quarterback Peyton Manning during a two-minute drill period.
Punches were thrown, and Texans star defensive end J.J. Watt was involved, according to Lindsay Jones of USA Today.
The teams will practice together again on Friday before squaring off in a preseason game Saturday in Denver.
"I think that 36 (Swearinger) was just talking," Harris told DenverBroncos.com. "He'd just got a pick of Peyton, so he was just talking. His swag just went to another level."
"They got all hyped up over (it)," said Harris. "I mean, Peyton threw one little pick. But we'll see what happens on Saturday."
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The Texans finished with an NFL-low two wins in 2013, while the Broncos went 13-3 in the regular season before falling to the Seahawks in the Super Bowl.
On Tuesday, Texans coach Bill O'Brien said he thought the Broncos looked like a Super Bowl-caliber team.
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