Derrick Jensen's touchdown on a blocked punt ignited a Los Angeles onslaught.(AP)
The Los Angeles Raiders dominated the Washington Redskins from the beginning in Super Bowl XVIII and achieved the most lopsided victory in Super Bowl history, surpassing Green Bay's 35-10 win over Kansas City in Super Bowl I.
The Raiders took a 7-0 lead 4:52 into the game when Derrick Jensen blocked Jeff Hayes's punt and recovered it in the end zone for a touchdown.
With 9:14 remaining in the first half, Raiders quarterback Jim Plunkett fired a 12-yard touchdown pass to wide receiver Cliff Branch to complete a three-play, 65-yard drive.
Washington cut the Raiders' lead to 14-3 on a 24-yard field goal by Mark Moseley. With seven seconds left in the first half, Raiders linebacker Jack Squirek intercepted Joe Theismann's pass at the Redskins' 5-yard line and ran it in for a touchdown to give Los Angeles a 21-3 halftime lead.
In the third period, running back Marcus Allen, who rushed for a Super Bowl-record 191 yards on 20 carries, increased the Raiders' lead to 35-9 on touchdown runs of five and 74 yards, the latter erasing the Super Bowl record of 58 yards set by Baltimore's Tom Matte in Game III. Allen was named the game's most valuable player.
The victory over Washington raised Raiders coach Tom Flores' playoff record to 8-1, including a 27-10 win against Philadelphia in Super Bowl XV.
The 38 points scored by the Raiders were the highest total by a Super Bowl team. The previous high was 35 points by Green Bay in Game I.