Cal's loss to Auburn on Saturday stung in more ways than one for Aaron Rodgers ... 'cause it appeared he and his Jets teammate had a wager on the game -- one that resulted in the quarterback having to reluctantly wear some Tigers gear on Sunday.
The Golden Bears -- who Rodgers played for from 2003 to 2004 -- fell to Auburn, 14-10, in Berkeley ... and it seems Rodgers had a bet with C.J. Uzomah over it all ... 'cause roughly 24 hours after the L, the signal-caller was seen in the NY locker room with a whole lot of of orange on.