Raleigh, N.C. ? Duke won all season thanks to its high-powered offense. The Blue Devils are advancing in the NCAA Tournament thanks to their defense.

Duke’s perimeter pressure helped offset Texas’ strength inside by denying easy passes into the post, and the Blue Devils held the Longhorns to their fewest points in two years, winning 62-46 Saturday in an East Regional semifinal.

Top-seeded Duke (30-3) won its school-record 21st straight game and advanced to Monday’s final eight. It will face third-seeded South Carolina, which beat Drake 79-65.

Alana Beard had 15 points and six steals, and Sheana Mosch scored 13 for Duke..

The Longhorns hadn’t scored so little since a 73-44 loss at Texas Tech on Feb. 3, 2000. And Texas’ 16 first-half points against Duke were the second-fewest ever in an East Regional game.

The Blue Devils won despite scoring 23 points below its season average.

Duke shot 35 percent, but converted 24 Texas turnovers into 26 points. Duke finished with 17 steals and forced Kenya Larkin into 12 turnovers.

South Carolina 79, Drake 65

Shaunzinski Gortman and Jocelyn Penn each had 19 points as third-seeded South Carolina beat seventh-seeded Drake in an East Regional semifinal. The Gamecocks (25-6) earned their first trip to a regional final, where they will face No. 1 seed Duke.