The Nashville Tennessean believes it will be a "challenge" for Marc Mariani to unseat Darius Reynaud as the Titans' return specialist. Mariani suffered a compound leg fracture last preseason, and it left some wondering if the 2010 Pro Bowler's career was over. He's now nearing 100 percent, while coming off an "amazing" spring. Reynaud returned two punts and one kickoff to the house last season, and he was re-signed to a one-year deal.