Handicapping Purdue's QB derby

The highest-ranked player in Purdue's 2013 recruiting class is quarterback Danny Etling (Terre Haute, Ind./South Vigo). Is there a chance he'll see the field in 2013? That's hard to say. It's a crowded position -- counting Etling, the Boilermakers will have five quarterbacks on the roster next year -- but there's no experienced favorite, either. ESPN.com Big Ten blogger Adam Rittenberg breaks down the candidates: