Keys for Winston, Mariota in Year 1; most valuable backup QBs; reader mail

SI.com's Ben Eagle, Chris Burke and Doug Farrar break down what Jameis Winston and Marcus Mariota need to do to be successful in their rookie years, examine which backup QBs have the most trade value and answer reader mail. Tweet the whole team: twitter.com/si_nfl • twitter.com/benjamineagle • twitter.com/si_dougfarrar • twitter.com/chrisburke_si Audibles is sponsored by FanDuel.com For up to a $200 bonus, enter our code NFLPODCAST. We're also sponsored by the SeatGeek app, available at SeatGeek.com. Enter our code AUDIBLES for a $20 rebate. Music by: Wild Shores [wildshores.bandcamp.com/] Find more sports at si.com/podcasts. SI is part of the Panoply Network: megaphone.fmAdvertising Inquiries: https://redcircle.com/brandsPrivacy & Opt-Out: https://redcircle.com/privacy