CLEMSON, S.C. -- Deshaun Watson tied his career high with six touchdown passes, three to Mike Williams, and No. 4 Clemson took another, strong step to the College Football Playoff with a 56-7 victory over rival South Carolina on Saturday night.
If the Tigers (11-1) don't stumble against Virginia Tech next week in the Atlantic Coast Conference championship, they'll be off to college football's final four for a second straight season.
The Gamecocks (6-6) were little more than speed bump on that road that Clemson got past quickly, jumping out to a 21-0 lead in the opening quarter and cruising to a third straight win in the Palmetto State's biggest sporting event.
"We wanted to jump on these boys real quick," Watson said. "That's the motto every game, put pressure on them and have them back on their heels."
Watson finished with 347 yards and matched the six TDs he threw in his first college start against North Carolina in 2014. He also likely crept a bit closer in the Heisman Trophy race to Louisville quarterback Lamar Jackson, whose team lost for a second straight week.
Watson and the Tigers also wiped out memories of their last Death Valley game, a stunning, 43-42 loss to underdog Pitt -- Clemson's first home loss in more than three years.
"We started the ball rolling last week and we're keeping the ball rolling," center Jay Guillermo said. "We're hitting our stride at a good time."
Watson and Williams got things going with a 34-yard TD catch. Then Williams' dragged South Carolina's Jamarcus King on his for several yards during a 19-yard scoring catch. By the time Jordan Leggett scored on a wide open 11-yard grab, Clemson was in front to stay and Gamecocks defenders were yelling at each other.
Wayne Gallman rushed for 112 yards and a touchdown. Williams caught six passes for 100 yards.
Clemson's defense held the Gamecocks to 62 yards in the first half and posted its biggest margin of victory in the series since a 51-0 win in 1900.
"There's not a lot to say," Gamecocks coach Will Muschamp said. "On the road recruiting tomorrow, that's the way we'll change our program."
South Carolina certainly made strides over the second half with young players on offense like quarterback Jake Bentley and tailback Rico Dowdle. The Gamecocks will need to add a lot more talent on both sides of the ball before it can match up with the Tigers. Another month of practice and a favorable bowl opponent would still leave South Carolina feeling good about its progress this season.
Clemson found its dominating form in its final home game of the season after its stunning, 43-42 fall to Pitt the last time here two weeks ago. More importantly, the Tigers showed a resolved it will need for a second straight trip to the College Football Playoff. If Clemson shows the same drive against Virginia Tech, there's no doubt it will play once again for a national title.
Look for Clemson to move up a spot with No. 3 Michigan's loss to second-ranked Ohio State.
South Carolina will await its bowl destination.
Clemson will face Virginia Tech in the ACC championship game in Orlando, Florida, next Saturday night.