The Giants got after Matt Cassel on Sunday.

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Dwayne Harris sped 100 yards with a kickoff return against his former Dallas teammates seconds after the Cowboys had tied Sunday's game, and the New York Giants moved atop the NFC East with a 27-20 victory.

Harris spent four seasons in Dallas without running back a kickoff for a score. But he tied a Giants record set in 1994 by romping untouched to the end zone.

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New York (4-3) snapped a five-game slide against Dallas (2-4) thanks to big plays by its defense and special teams. Dominique Rodgers-Cromartie had two interceptions, returning one 58 yards for a touchdown.

The Cowboys, losers of four in a row without injured offensive stars Tony Romo and Dez Bryant, got a big game from Darren McFadden. Starting running back Joseph Randle left early with a strained back, and McFadden rushed for 152 yards and a TD.