Ralph Sampson, who scored only two points in the first half, had 13 points, 12 rebounds and three blocked shots in the last 20 minutes as third-ranked Virginia beat James Madison, 73-65, tonight.

Sampson, who took only one shot the opening half, made five of five field goal attempts and five of eight free throws in the game. "The flow of the game got easier in the second half," he said. "I guess they got tired of beating me all night, and I got free a little more."

Sampson, who had 22 points four nights ago when Virginia beat Madison, 57-44, in the final of the Richmond Times-Dispatch tournament, played the last five minutes with four fouls.

"He did have a very good second half," Virginia Coach Terry Holland said. "I just think they were ganging up (on Sampson), and we were getting little 12-foot jumpers, but not burying them like I thought we would at home."

Virginia shot 54 percent the first half and 67 percent the next half.

The Cavaliers (11-0) outscored Madison, 14-4, the last five minutes of the first half to take a 32-28 lead. They never again trailed, and increased their advantage to as much as 50-38. Madison never got closer than seven.

"I thought we had better control of this game (compared with the one Dec. 30) despite the score," Holland said. "We were able to force the tempo a little more, which is why the score was in the 70s as opposed to the 40s."

Madison Coach Lou Campanelli, however, said he felt that the officiating played a bigger role tempo in determining the outcome.

"The officials never gave us a chance tonight," Campanelli said. "We committed 29 personal fouls. That's never happened in the 10 years I've coached. They outscored us 14 points from the line. That says it all."

"I didn't notice anything in particular," Holland said about the officiating. "It was a very intense game, and I thought we were both on them pretty good.

Virginia, which was 25 for 36 from the line, was called for 19 team fouls. Sampson and Craig Robinson each had four personals.

Madison was 11 for 19 from the line and had one player--Woody Boler--foul out. Bob Donohoe played the last 12:49 with four fouls, while Dan Ruland was called for his fourth with 9:44 left.

Ruland still managed to lead all scorers with 18 points, and had 12 rebounds.

Othell Wilson led all Virginia scorers with 17 points. Robinson and Jeff Jones had 12 each.

Madison, which outrebounded Virginia, 30-24, dropped to 8-2.