We all know that quarterback is most important position in the NFL.

But what happens if your starter is sidelined?

You'd better hope that your backup QB can handle the spotlight or your playoff drive will go down in flames.

So, which team has the best Plan B waiting in the wings?

Washington Redskins - Kirk Cousins
In the past two season, Cousins filled in for RGIII in eight games and thrown for 1,320 yards and eight TDs. With the Redskins awesome offensive weapons, this talented up-and-comer would have plenty of help.

Tampa Bay Buccaneers - Mike Glennon
Glennon was thrust into the starting job as a rookie last year and performed admirably, throwing 19 TDs against just 9 INTs. Not bad, rookie!

Miami Dolphins - Matt Moore
Moore is an experienced NFL starter with 33 career TDs, just what you want in a back-up.

New York Jets - Michael Vick
Vick is a four-time Pro-Bowler with over 21,000 yards and 128 TDs passing, and another 5,800 yards and 36 TDs rushing. You definitely want that kind of experience and talent as your insurance policy, but how much does Vick have left in the tank?

Who is the best backup QB in the NFL?