Ryan finished 15-of-21 passing for 102 yards and Chris Redman passed for 83 yards for the Falcons (1-2).
Brown's touchdown run was a 9-yarder.
Tennessee quarterback Vince Young completed half of his 18 passes for 102 yards. Young also threw an interception.
John Vaughn kicked a 50-yard field goal for the Titans (2-1).
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