The jeers were noticeable as Derek Carr jogged to the Black Hole to thank fans for the support they had shown him since he arrived with the as a second-round draft pick in 2014.And after fans showered the quarterback's scrum with beer, soda and assorted trash, the boos from the sold-out crowd of 52,788 at RingCentral Coliseum grew thunderous as Carr emerged into full view of fans and sprinted toward the tunnel to the locker room.