Fifth-ranked Indiana combined the long-range shooting of Randy Wittman with a ball-control offense to beat Oklahoma, 63-49, in the second round of the NCAA Mideast Regional today.

Charles Jones and Lancaster Gordon scored 18 points each in leading second-ranked Louisville over Tennessee, 70-57, in the second game. The Cardinals (30-4) extended their winning streak to 14 and will meet No. 9 Arkansas (26-3) Thursday at Knoxville, Tenn., in the regional semifinals.

Indiana (24-5) faces arch rival Kentucky in Thursday's other Mideast Regional matchup.

Wittman scored 22 points, 12 in the first half, when the Hoosiers built a 34-22 advantage.

Indiana maintained that margin midway through the second half when Coach Bob Knight ordered a slowdown offense that protected the ball and forced the Sooners (24-9) into fouls. In addition, the tactic forced Oklahoma into several poor shots in the closing minutes that thwarted a comeback bid.

"We never came across a team like Indiana that holds the ball with a 10-point lead," said Oklahoma's interim coach, Mike Newell. "Give Indiana credit."

"I thought we were drained," said Knight. "That's why we went for the delay with 14 minutes left. "I was tired at halftime. It must have been 150 degrees in the locker room."

Freshman Wayman Tisdale led the Sooners with 14 points, 11 under his season average, as the Hoosiers' man-to-man defense prevented Oklahoma from getting the ball to its star center.

Indiana started slowly, falling behind, 10-9, with 12:24 left in the first half. But the Hoosiers scored seven straight points to take a 16-10 lead. Center Uwe Blab, who scored 10 points, contributed several sweeping hook shots to prevent Oklahoma from keying on Wittman.

Wittman and Blab helped Indiana score six straight points minutes later to take a 24-14 lead.

Louisville, top-seeded in the region, went on an 11-2 run midway through the second half after Tennessee had closed the margin to 45-43. Jones and Milt Wagner combined for eight points in the spree to give the Cardinals a 56-45 advantage.

All-America Dale Ellis, the leading scorer in Tennessee history, was held to 13 points by Louisville's switching man-to-man defense.