Adrian Martinez turned back a challenge from Luke McCaffrey to win the starting quarterback’s job for Nebraska’s opener at No. 5 Ohio State. McCaffrey made a serious bid to unseat the Cornhuskers’ two-year starter, who struggled with injuries last year and seemed to regress from his fantastic freshman season in 2018. Coach Scott Frost said he feels as if he’s got two starting quarterbacks because there is so little separation between the two. McCaffrey is the brother of NFL star Christian McCaffrey and son of former pro receiver Ed McCaffrey. Luke played quarterback and receiver as a freshman last season.