MIAMI GARDENS, Fla. -- Tennessee Titans coach Mike Mularkey decided his starters would play one series Thursday night, and for the defense, that meant a single snap.The Titans forced and recovered a fumble on the games first play, setting up a touchdown as they beat Miami 21-10 in the Dolphins remodeled stadium.Tennessee defensive end DaQuan Jones jarred the ball loose from Jay Ajayi, and Rashad Johnson recovered. Three plays later, rookie Derrick Henry scored on a 1-yard run, and that was the last action for almost all Titans first-teamers.Im happy with the defense with a turnover on the first play, Mularkey said. Im happy with the offense scoring a touchdown off of the turnover. Those are things good teams do.The game gave South Floridians their first chance to check out the $500 million renovation of the Dolphins stadium, including a canopy and new video boards, as the project made its tight deadline.We had over 600 workers here, 24 hours a day, seven days a week for eight months, Dolphins president Tom Garfinkel said. Thats what it took to get it done.Any attendance boost will have to wait, however. The crowd totaled perhaps 20,000, meaning the stadium was less than one-third full.Quarterbacks Marcus Mariota and Ryan Tannehill didnt play. Most of the Dolphins starters were held out, and coaches on both teams used the game to evaluate players trying to make the roster.The Titans finished the exhibition season 3-1, and the Dolphins went 2-2. Both teams open the regular season Sept. 11, with Miami at Seattle, and Tennessee hosting Minnesota.ROOKIE WATCHDolphins: G Laremy Tunsil, their first-round pick and a likely starter, was nursing a minor foot injury and didnt play as a precaution. RB Kenyan Drake made his preseason debut and had a 33-yard reception.Titans: Heisman Trophy winner Henry carried seven times for 62 yards, including a 26-yard run.He has done a great job since he has stepped in, whether its pass protection or running the ball, Mariota said. Were happy to have him.Undrafted DE Mehdi Abdesmad had a tackle for a loss and a sack.POSITION BATTLESMiami: Ajayi had three carries for 13 yards and dropped a pass to go along with his fumble.I was a little disappointed he put the ball on the ground, coach Adam Gase said. I know its the fourth preseason game, and