Ralph Dalton, Georgetown University's 6-foot-11 front-court reserve, "more than likely" will play basketball for the Hoyas next season, using his final year of eligibility as a graduate student, Coach John Thompson said yesterday.

Dalton would be eligible because a knee injury kept him from playing as a freshman. "That (Dalton's status) hasn't totally been decided," Thompson said. "He's now working during the summer with Xerox. I would have to say it's more yes than no . . . ."

Thompson also said he has decided not to add a fifth player to his 1985 recruiting class. He was talking with a small guard with exceptional speed whom he did not name. "The boy called me up and wanted to know how much playing time he was going to get," Thompson said. "I told him, 'None.' "

Thompson, attending a celebrity golf tournament at Newbridge Country Club sponsored by the Washington chapter of Grambling State alumni, skirted the issue of whether he might leave Georgetown to coach in the NBA.

Asked if he was staying put, Thompson said, "I haven't taken a job yet." . . .

Philadelphia 76ers General Manager Pat Williams on efforts to hire Detroit Pistons Coach Chuck Daly: "Yes, we talked to Detroit about compensation if we made an offer to Chuck. They've asked for a No. 1 draft choice. Obviously we're not going to do that."

Jack McCloskey, the Pistons' general manager, said he expects a reply Monday. "If we don't agree, Chuck will be back here next season and he'll be happy to be and we'll be happy to have him."

Williams indicated the 76ers are ready to promote assistant coach Matty Guokas if the Daly deal doesn't come through . . .

The Newark YMWCA basketball team will play Hunters of Philadelphia in the final of the AAU 19-and-under Junior Olympic Eastern Zone basketball tournament today at 3:30 at Georgetown's McDonough Arena. Both qualified for the AAU nationals in Jacksonville July 8-12.

D.C. All Saints (2-1) beat Syracuse, 89-76, to gain today's consolation at 2. Executive III lost to Gauchos of New York, 95-94, and Newark, 89-69, but was awarded a victory when it was learned the Gauchos used three players who recently competed at the 17-and-under level . . .

A Prince George's County answer to the D.C. Urban Coalition League comes alive Tuesday with openers of the King Cobra Summer Basketball League, fielding players of college all-star caliber. Doubleheaders twice a week, Tuesdays and Thursdays, plus a continuing slam-dunk competition. Admission free. Opening ceremonies, 6:30 p.m. at William Beanes Community Center, 5108 Diana Dr., Suitland; games at 7 and 8.