NFL divisional round action got off to a hot start on a chilly late afternoon in Kansas City. But the heat was mostly on the Houston Texans sideline as tempers flared in the early moments of the high-stakes game against the reigning back-to-back Super Bowl-champion Chiefs.

Television cameras showed Texans defensive back Kris Boyd nearly shoving Houston special teams coach Frank Ross to the ground moments after the playoff game's opening kick.

The Texans kicked the ball to the Chiefs to start the game. Chiefs returner Nikko Remigio fielded the kick and quickly broke through some of the would-be Texans tacklers. 

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Remigio soon hit the open field and raced toward the end zone. But, Boyd eventually caught up to him and stripped the ball loose.

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He then ran toward the Texans sideline and celebrated the fumble by ripping off his helmet and sending it skittering toward the bench. However, there was one noticeable problem — the Chiefs had actually recovered the fumble.

Boyd proceeded to shove Ross on the sideline.

The 28-year-old cornerback was ultimately flagged for unsportsmanlike conduct for taking off his helmet.

The Texans advanced to Saturday's divisional round game after upsetting the Los Angeles Chargers in the wild-card round last week.  

Houston entered Saturday's game against the Chiefs as considerable underdogs but entered the locker room at halftime trailing by just seven points. The third quarter ended with Kansas City leading 13-12.

The winner of the game at Arrowhead Stadium will await the outcome of Sunday's other AFC divisional matchup between the Baltimore Ravens and Buffalo Bills.

The Associated Press contributed to this report.

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