Wisconsin Dells – When preseason camp opens in August, Wisconsin likely will have only three healthy quarterbacks on the roster. That trio: Danny O’Brien, who is transferring from Maryland; walk-on Joel Stave, who closed spring practice as the No. 1 quarterback; and Joe Brennan, the No. 2 quarterback at the end of spring ball. Curt Phillips, who is entering his redshirt senior season, is trying to come back from another surgery on his right knee and has not played since the 2009 season.