The Redskins played the Tampa Bay Buccaneers in their fourth regular season game of the year.  Washington fumbled early in the game, giving the Buccaneers possession of the ball at the Redskins' 10-yard line. Tampa Bay scored on quarterback Josh Johnson's 8-yard touchdown pass to wide receiver Antonio Bryant in the first quarter. Mike Nugent's 37-yard field goal in the second quarter gave the Buccaneers a 10-point lead. In the third quarter, the Redskins kicker Shaun Suisham made a 42-yard field goal.  Afterwards, Jason Campbell completed a 17-yard touchdown pass to tight end Chris Cooley. The point after was blocked. The Redskins also scored when Campbell threw a 59-yard pass to wide receiver Santana Moss.  Nugent successfully kicked a 22-yard field goal in the fourth quarter; setting the final score of Washington 16 to Tampa Bay 13. Josh Johnson saw his first NFL start. Jason Campbell finished the day with three interceptions and two touchdowns.
Question: How many points did Tampa Bay need to win the game?
Answer: 4