Mariota was selected with the second overall pick in the first round by the Tennessee Titans in the 2015 NFL Draft behind Jameis Winston.  In May 2015, Mariota had the best-selling NFL jersey in the league, beating out Winston of the Tampa Bay Buccaneers, and Tom Brady of the New England Patriots, who had the second and third highest selling jerseys, respectively. "It's surreal for me, it's such an honor," Mariota said. "For me it's one of those deals, looking back on it in the future, it's a crazy, crazy deal for sure. " Mariota and the Titans agreed to a contract on July 21, 2015. This made Mariota the last first-round pick to be signed and for the second straight year, the Titans were the last team to sign their first-round pick.  Mariota signed a four-year, $24,213,974 contract with the Tennessee Titans. This includes a $15,870,164 signing bonus, $24,213,974 guaranteed, with an average annual salary of $6,053,494.  Mariota made his professional debut on August 14, 2015 in the first preseason game against the Atlanta Falcons where he completed 7 out of 8 passes for 94 yards with an interception and a lost fumble returned for a touchdown.