at Lincoln Financial Field, Philadelphia|weather= 47&#160;&#176;F (Cloudy)A matchup that pitted the Eagles' No. 1 offense against the league's worst defense turned into a disaster for the Eagles, as they lost to the heavy underdog Titans . The Tennessee Titans scored on the opening drive with a 14-yard reception by tight end Ben Troupe. An apparent Brian Westbrook touchdown reception was reversed by a coach's challenge and Donovan McNabb tossed an interception the next play. The Eagles got on the board at the end of the quarter with a 42-yard field goal by David Akers, making it 7-3.  Early in the second quarter, McNabb was pushed out of bounds at the end of a scramble, and had to be carted off of the field with a knee injury. Backup quarterback Jeff Garcia came into the game and helped drive the Eagles to another field goal, closing the gap to 7-6. Vince Young led the Titans to a scoring drive of their own before the end of the half, making it 10-6.  In the third quarter, the Eagles saw their season slip away from them.  Travis Henry broke a 70-yard touchdown run, then Pacman Jones returned a Dirk Johnson punt 90 yards. The Titans led 24-6 and Garcia, who had 48 pass attempts in less than three quarters, could only register a short touchdown pass to L.J. Smith. A botched shotgun snap led to a humiliating, late defensive touchdown for Tennessee.  Westbrook rushed for 102 yards in the 31-13 loss.  McNabb's knee injury was revealed after the game to be a torn ACL, knocking him out for the season. At the time, it was thought that the loss of the game and McNabb would virtually crush Philadelphia's playoff hopes.. How many touchdowns did the Titans score?