No. 1 -- Shayne Skov's status? LB Shayne Skov missed spring practice as he continued rehab from a season-ending knee injury suffered against Arizona in the third game of the season. Coupled with an arrest for allegedly driving under the influence, Skov's return date remains a mystery. Coach David Shaw is expected to announce his punishment during fall camp. No. 2 -- Impact of freshmen? The Cardinal landed its most lauded recruiting class of all time this year, which included several players who have a chance to play as true freshmen. How those guys impact the depth chart is up in the air, however OTs Andrus Peat and Kyle Murphy both are expected to factor into the competition at LT. No. 3 -- Nottingham or Nunes? The race to replace Andrew Luck at QB will be one of the most intriguing position battles in all of college football. Regardless if it ends up being sophomore Brett Nottingham or junior Josh Nunes , the offense will rely heavily on the running game -- especially early -- and RB Stepfan Taylor in particular.