Landry's score broke open a tight game in which the Redskins amassed more yards and dominated the time of possession but could not pull away.
Miami trailed 10-0 in the second quarter, cut it to 10-7 at halftime and pulled even with 11:34 remaining when Andrew Franks kicked a 22-yard field goal to cap a 76-yard drive.
The Dolphins then forced a punt. Landry took the ball in the center of the field and darted up the middle, dodging would-be tacklers along the way.
Copyright 2015 by The Associated Press