What to watch for: Chiefs at Steelers

Three keys for the Kansas City Chiefs in their preseason game at Pittsburgh on Saturday. Kickoff is set for 7:30 p.m. ET:

Offensive line: This unit was not good against San Francisco last week. Alex Smith was sacked three times and there was constant pressure. Coach Andy Reid said the line would tighten and it needs to happen.

Receivers: The Chiefs need some receivers to step up and show that Dwayne Bowe will have some help.

Special teams: This unit has been off-the-charts terrific in the first half of the preseason. It has been dominant. Can it continue?