Competing in the dog days of summer in pads and helmets as hard as you can may sometimes get the best of these players. Veteran Chiefs know how an Andy Reid training camp goes, but add that level of competition to the heat, and some tensions will flare from time to time.

Travis Kelce played peacemaker at a Kansas City Chiefs practice after a fight broke out between his teammates.

Wide receiver Marquise Brown was among several Kansas City Chiefs who left practice with an injury Tuesday, when the nearly 2 1/2-hour workout was conducted in temperatures that produced a triple-digit heat index by its conclusion.