Forward Mitch Kupchak, who underwent surgery June 29 for repair of a herniated disk, will be reactivated today, the club announced yesterday.

The 6-foot-10 forward will be available to play against the Spurs tonight in San Antonio (8:30, WDCA-TV-20).

The Bullets made room for Kupchak on their roster Wednesday by trading 6-10 rookie center Steve Malovic to San Diego for a second-round draft choice in 1982 and future considerations.

A four-year veteran, Kupchak avaraged 14.6 points in 66 games last season but has not played since the second game of last season's Eastern Conference championship series with the Spurs.

Kupchak said he is feeling well and ready to play. The Bullets can use his enthusiasm and hustle.

After a slow start, Washington rebounded to win four straight games before taking it on the chin from Cleveland, 122-103, at Capital Centre Wednesday night.

Washington played well the first half, building as much as a 10-point lead. But the Cavaliers played on aggressive defense to shut down Washington's inside game. The Cavs shot a blistering 70 percent in the third period to turn a five-point halftime deficit into a 91-77 lead.

"We got that early lead to go in at the half leading (59-54) but I was scared," said Washington Coach Dick Motta. "Cleveland came out fast and got that 13-point turnaround. It was all over but the shouting. The momentum had changed and we couldn't do anything."

The Bullets shot 44 percent for the game but had periods of one of 12, zero for eight and three for nine from 18, Phil Chenier two of 11 and Kevin Porter three of nine from the floor.

Porter slightly injured his knee diving for a loose ball in the third period. The injury is not believed serious and the point guard is expected to play this weekend.

Bobby Dandridge, who has had a stiff neck, did not start against the Cavs but played 37 minutes and led the Bullets in scoring with 23 points. Roger Phegley and Larry Wright also played well in the loss.

Washington didn't help itself as it waged a game-long battle of words with officials Jack Madden and Leroy Alexander. Hayes, who fouled out, said, "it's obvious Madden doesn't like the Bullets. We didn't get a call the entire second half.

"We did fine the first half. Cleveland came out the second half and started hitting us and took us right out of our offense."

Washington shot 13 free throws, making 11. Cleveland, playing one of its best overall games this season, converted 23 of 27 from the line.

The Bullets defeated San Antonio in their only meeting earlier this year, 125-116, at Capital Centre Nov. 9. The Spurs, led by George (Iceman) Gervin, lost their last game to Philadelphia, 118-114, and are 1-9.

Saturday night, the Bullets will face the red hot Houston Rockets. Sparked by the scoring and rebounding of Moses Malone, Houston (10-8) has won eight of its last nine games. It defeated the 76ers Wednesday night, 97-94.