Sometimes i forget what should be the Kansas City Chiefs biggest offseason story line -- the team is installing a new offense. Offensive coordinator Brian Daboll joined the coaching staff this offseason and like most new offenses the players are tasked with learning a new terminology.

The players haven't said much about it so we only kinda, sorta have an idea of what the offense will be like, but without many specific details. Chiefs QB Matt Cassel spoke to the media on Wednesday and what he said reminded me that installing a new offense is a big deal.

"It's been a big learning curve for me," Cassel said of the Chiefs new offense. "It's been a steep learning curve, really."

Cassel should be used to changing offenses, considering he's done that a time or two (or five) in his career. He's the one who probably knows the offense the best (outside of Peyton Hillis, who played under Daboll) and even he considers it a tough challenge.

Makes me wonder if the Chiefs will be a little rusty to start the season.