The Arizona Cardinals open their preseason slate against the Kansas City Chiefs. Here are five storylines to watch, starting with Kyler Murray's arm.

The Kansas City Chiefs are eager to kick off their preseason with a strong performance against the Arizona Cardinals. However, uncertainty surrounds whether superstars Patrick Mahomes and Kyler Murray from Cardinals will feature in the starting lineup for this opening game.

Kansas City’s quarterback and leader is pushing his peers right from the jump. Plus, the team’s depth appears to be in much better shape than last year.