Washington did most of its damage on its overtime drive on the ground, with three runs of 10 yards or more.
The game also didn't get to overtime as the Redskins came really close to pulling off a miracle finish. On the last play of regulation, Washington QB Jason Campbell heaved the ball from the Redskins 43-yard line and it was batted back by Jason Taylor, who had dropped back all the way to the goal line, right into the hands of Antwaan Randle El at the 5.
Fortunately for the Dolphins, Taylor was able to push Randle El out of bounds at the 2-yard line.
The Dolphins missed a chance to win in regulation themselves when they turned a first-and-goal at the 8-yard line into a second down from the 28 after back-to-back penalties on Rex Hadnot and Trent Green.
That forced the Dolphins to settle for a field goal and a 13-13 tie.
It was the second time in the second half that Jay Feely had tied the game with a field goal.
The Dolphins went into halftime leading 7-3, but Washington quickly regained the lead at the start of the second half with a 78-yard drive capped by a 19-yard touchdown run by Clinton Portis.
The Dolphins offense struggled in the first half until the last drive when they marched 62 yards for a touchdown. Cameron showed he wasn't afraid to gamble when he decided to go for the touchdown instead of a field goal on third-and-goal from the 1 with only four seconds left.
The gamble paid off when a scrambling Trent Green hit tight end Justin Peelle in the end zone.
The drive, oddly enough, started with a drop by Chris Chambers, followed immediately by a diving catch by Chambers good for 23 yards.
Another big play in the drive was a 12-yard gain by Marty Booker on a reverse.
After Jesse Chatman gave the Dolphins a first-and-goal at the 2-yard line with a 7-yard reception, the Dolphins ran two straight running plays while letting the clock run. That put Cameron in the position of having to decide between kicking a field goal or going for the touchdown.
The Dolphins had five first down on that drive, which was one more than in the first five drives combined.
But the defense, as it has done so often in recent years, kept the team in the game.
Safety Renaldo Hill had another big play for the defense, picking off a Jason Campbell pass in the first quarter.
Washington's scoring drive in the first half was highlighted by a 35-yard completion to Antwaan Randle El, who beat Travis Daniels down the left sideline.
The Dolphins also were fortunate that Campbell missed a wide open Santana Moss on a third-down pass from the Miami 41, and Moss later dropped a pass at the Redskins 45 on another third down.