Embed from Getty Images     1. We’re witnessing Marcus Mariota become a legitimate MVP candidate. After a 1-3 start, the Tennessee Titans have now won five of their last eight games behind the superb play of second-year quarterback Marcus Mariota. Mariota has thrown multiple touchdowns every game since Week 5, and he’s the NFL’s highest-rated passer during that span (117.7 rating). The Titans are right in the thick of…