All rookies in the past have been allowed to participate in rookie minicamps. But those from schools with classes still in session -- many of them from the Pac-12 -- have been barred from participating in many other spring activities, including organized team activities and minicamps, until their schools' exams were complete. This year, that included two top-10 picks from Stanford, Solomon Thomas (49ers) and Christian McCaffrey (Panthers), who told reporters he'd like to see the rule change "or at least make some exceptions."