It's all square in the NFL clash between the Kansas City Chiefs and the Oakland Raiders at Arrowhead Stadium at half time.

The game started with a sack of Chiefs quarterback Alex Smith as linebacker Sio Moore brought him down for a seven-yard loss and that set the tone for the majority of the first half as both offenses struggled to get into rhythm against physical defensive play.

Early in the second quarter, Raiders quarterback Terrelle Pryor ran with the ball to put his side within field goal range of former first-round pick Sebastian Janikowski, but he could only put his kick from 51 yards inches wide of the post.

However, on their next drive the Raiders found the end zone as Pyror again led them downfield with a solid series of throws and found wide receiver Denarius Moore on a slant route and he ran all the way into the end zone from 39 yards out to give his side the lead.

The Chiefs looked to maintain their unbeaten record and rallied just before half time as Jamaal Charles ran the ball in from seven yards out to draw his side level.