Rodney McCray, the No. 3 pick in the National Basketball Association draft, was released from a Louisville hospital after treatment for a ruptured disk.

Dr. Andrievs Dzenitis said, "Yes, he was treated for a back disorder," confirming the ailment is a ruptured disk. "He's doing perfectly great, everything is fine."

McCray has not signed a contract with the Houston Rockets, who also drafted Ralph Sampson . . .

Nate (Tiny) Archibald, 12-year NBA veteran placed on waivers 10 days ago by the Boston Celtics, was claimed by the Milwaukee Bucks.

Former Washington Bullet Phil Chenier and current Bullet Charlie Davis will help open the Los Angeles Olympic Organizing Committee's three-on-three youth tournament at 3 p.m. in the Family Life Center at 1510 9th St. NW. The tournament is sponsored by the LAOOC and Converse to promote the 1984 Games and will run through Aug. 25. For more information, call the Family Life Center . . .

The Kenner League team from Washington won the Basketball Congress International Summer Prep tournament in Tempe, Ariz. Kenner beat the South Coast (Calif.) All Stars, 58-41. Derrick Lewis of Carroll was named the tournament's most valuable player and Frank Smith of Mount Vernon was named to the all-tournament team.