In a 10-0 start, there are plenty of reasons for the Tennessee Titans success thus far this season.

There have been the usual suspects, such as defensive tackle Albert Haynesworth, rookie running back Chris Johnson and even the resurgence of journeyman quarterback Kerry Collins that have gotten plenty of headlines.

But the Titans would not be where they are most likely without key contributions from a handful of unknowns, backups and role players, who have stepped into the lineup when called upon and not missed a beat.

When Pro Bowl defensive end Kyle Vanden Bosch suffered a groin injury on Oct. 5 at Baltimore, it was expected that the Titans would experience a setback without the emotional leader of the defense.

But the likes of Dave Ball and Jacob Ford...

Jack Del Rio was pumping his fist and screaming kudos to his players as the Jacksonville Jaguars jogged toward the locker room with a 14-3 lead. It was a premature celebration, especially against the league's only unbeaten team. Behind, ahead. Home, away. Run, pass. Backups, starters. No matter the situation, the Tennessee Titans keep finding ways to win -- and staying undefeated.

The Tennessee Titans finally have made it tough on defenses. Kerry Collins has proven he can win games with his arm. Now, running back LenDale White says, it's time for opponents to pick their poison. Keep stacking the line to stop one of the NFL's best rushing offenses? Or play straight up to keep Collins from picking a defense apart?