Discipline is the common denominator for the AFC West teams fighting for first place in Las Vegas on Sunday.The Raiders (3-0) average an NFL-low 30 penalty yards per game and haven't allowed a single point in the fourth quarter this season.

Execution issues then hit the Raiders’ special teams. Las Vegas made a valiant effort in the final two minutes, but ultimately misplayed its final snap. Despite the fact the clock was stopped after a spike, they had a disjointed operation and drew an illegal shift penalty, which was ultimately declined due to the game-ending interception.

Patrick Mahomes is expected to play against the Las Vegas Raiders as the Kansas City Chiefs put their unbeaten record on the line. After returning from ACL and LCL surgery, Mahomes has thrown for 812 yards,

Kansas City was able to prevail for the sixth time in its seven trips to Las Vegas to take on the Raiders with a 30-27 victory in a physical affair that came down to a couple big plays.

After just three weeks, the Chiefs and Raiders are among five remaining undefeated teams in the league. Nine months ago, in early January, the Chiefs and Raiders played a meaningless Week 18 game in which Chris Oladokun squared off against Aidan O’Connell.

The Detroit Lions play the Panthers on "Sunday Night Football." Follow live score updates, highlights, injury news, key plays, and instant analysis.

Check out the top plays from Week 4, featuring the season's first game in London and a showdown of unbeatens in the late afternoon.