“When you talk about evaluating guys and the competition is close, then I think that’s what you kind of need to do is see guys in game situations,” coach Romeo Crennel said. “We don’t know exactly who the number two is because there’s good competition going on between the two guys.’’

Starter Matt Cassel will open the game. Quinn, listed as the top backup on the depth chart issued by the Chiefs this week, will at some point replace Cassel, with Stanzi to follow.

Identifying a capable backup for Cassel is one of the biggest issues of camp and the preseason for the Chiefs. Cassel missed at least one start in each of his three seasons with the Chiefs. He sat out the final seven games last season after breaking his finger.

The Chiefs were woefully unprepared last season at quarterback without Cassel. They started Tyler Palko, now out of the league, for four games before plucking Kyle Orton off waivers from the Broncos.