Stanford’s Andrew Luck, Cal’s Ron Rivera explain challenges of modern college sports

SAN MATEO – With the auditorium at the Peninsula Golf and Country Club split half-and-half between Cal and Stanford supporters and peppered with football royalty, the general managers of the rival schools’ football teams had a message of unity on Wednesday night. 

“We believe in each other, because we need one another to exist.” Cal’s Ron Rivera said. 

Rivera and Stanford’s Andrew Luck sat a few feet apart from one another in a panel moderated by ESPN’s Mina Kimes and attended by NFL commissioner Roger Goodell...