NASHVILLE, Tenn. (AP) — Drafting a Heisman Trophy winner at quarterback brings greater attention and expectations to any NFL team.For the Tennessee Titans, all this buzz has been missing for years, so Marcus Mariota already has provided a big boost to the bottom line.Now it's time to start showing he can help them win on the field.The Titans report for training camp Thursday trying to rebound from the franchise's worst season since 1994, a 2-14 campaign that included a 10-game skid to end coach Ken Whisenhunt's debut season.