Chiefs' Kelce delivers cheap shot after dropped pass.

Tempers are beginning to flare on Sunday night.

During the third quarter of Sunday's divisional round matchup between the Pittsburgh Steelers and Kansas City Chiefs, Travis Kelce dropped a pass, then decided to drop a cheap shot on a Steelers' player.

The Chiefs tight end had a meltdown after dropping a long pass from Alex Smith, then decided to rough up Steelers' corner Ross Cockrell after the play.

Even Kelce's teammate Justin Houston couldn't believe the boneheaded 15-yard penalty he took.