Chief RB Isiah Pacheco exits with concussion

CONCUSSION: Isiah Pacheco #10 of the Kansas City Chiefs is helped up after losing his helmet on a carry during the third quarter against the Las Vegas Raiders. Pic: Jamie Squire/Getty Images

Kansas City Chiefs running back Isiah Pacheco exited Monday's game against the visiting Las Vegas Raiders due to a concussion. The Raiders won, 20-14.

Pacheco lost his helmet on a third-quarter play in which he caught a short pass from quarterback Patrick Mahomes. While being tackled, the knee of a teammate smacked Pacheco in the head.