HOUSTON - Kansas City beat Houston 42-34 Sunday night at NRG Stadium.
The Chiefs jumped out to a 16-0 lead in the second quarter before the Texans could get on the board. By then they had already lost defensive end J.J. Watt to a broken leg.
The team announced that he sustained a tibial plateau fracture.
The defensive end was injured while being blocked midway through the first quarter and fell to the ground.
The Texans (2-2) trailed 23-7 at the half got as close as six at 26-20 in the fourth but saw Kansas City (5-0) pull away for the victory.
Deshaun Watson threw for five touchdowns to tie an NFL rookie quarterback record in the loss. DeAndre Hopkins caught three of them.