The Denver Broncos have beaten the Tennessee Titans at the Sports Authority Field with a second-half comeback.

The Titans went ahead in the first quarter when Shonn Greene completed a one-yard run, allowing Rob Bironas to kick good and claim the extra point.

The Broncos responded through Wes Welker as he collected a simple one-yarder from Peyton Manning to level the score.

The Titans went back in front going into the end of the first, as Chris Johnson ended a three-yard run past the defense for the touchdown.

However, the hosts brought themselves within touching distance early in the second quarter when Matt Prater kicked a 25-yard field goal that was declared good.

Greene, however, was on hand again in the second as he completed a one-yarder to bring the score to 21-10, before Julius Thomas latched onto an eight-yard pass from Manning to ensure that the Broncos were still in with a shout.

The Broncos pulled within touching distance just before the break as Prater completed a 64-yard field goal to leave the score at 21-20 going into half time.

John Fox's side then went ahead in the third quarter as Demaryius Thomas latched onto a four-yard pass from Manning.

Their lead was extended to 13 with a simple one-yarder from Knowshon Moreno and an extra from Prater's kick.

However, a 41-yard pass from Ryan Fitzpatrick reached Justin Hunter as the Titans began to make inroads on the Broncos' advantage.

Fox's outfit were too strong, though, and Prater kicked a 19-yard field goal before Eric Decker took them to 44 after another touchdown pass from Manning.

Montee Ball made a smart five-yard run near the end of the fourth to wrap up victory for the Broncos.