BRIEFLY NEW CHAMP TOSSED FROM MOTORCADE CAR.

Newly crowned heavyweight champion Hasim Rahman and his family were thrown from a convertible in a motorcade accident after a celebration Wednesday afternoon at the Baltimore City Hall.

Rahman, his wife and at least two of their three children were sitting in the back of a convertible when it struck a taxi, hurling them from the car.

Rahman suffered minor cuts on his elbows. His wife, Crystal, suffered cuts and bruises and was fitted for a neck brace before being taken from the scene by ambulance.

BASKETBALL: Moorpark College point guard Devin Montgomery, a 22-point-per-game scorer, has signed a national letter of intent to attend Pepperdine.

Montgomery, who attended Alemany High before spending a year at Duquesne, helped Moorpark to a 25-5 record and a place in the California State JC playoffs.

--USC forward David Bluthenthal has been named to the U.S. men's basketball team at this summer's World Maccabiah Games, the Jewish Olympics. The games are July 16-26 in Israel.

--Miami Heat guard Tim Hardaway will miss the remainder of the first- round playoff series against the Charlotte Hornets because of a foot injury.

--Seattle SuperSonics general manager Wally Walker says the team might be willing to part with star guard Gary Payton if they get the right offer.

Walker also said the SuperSonics would unload underachieving power forward Vin Baker (and his $87 million contract) and center Patrick Ewing.

FOOTBALL: Former Washington Redskins quarterback Doug Williams and New Orleans Saints coach Jim Haslett were among five players and two coaches added Wednesday to the College Football Hall of Fame.

Williams, now the coach at Grambling, and Haslett, who played linebacker and defensive end at Indiana University of Pennsylvania, were selected from Division I-AA, II, III and the NAIA schools. Last week, 15 former Division I-A players and three coaches were selected.

Also selected was former Occidental College player Bill Redell, now coach at Oaks Christian of Westlake Village.

--Village Christian coach Jim Yencarelli has resigned and athletic director Marty Martin will replace him. Martin was the defensive coordinator last season.

- Gerry Gittelson

SWIMMING: Olympic bronze medalist Kaitlin Sandeno of El Toro High in Lake Forest has signed a letter-ontent with USC.

Sandeno, who finished third in the 800-meter freestyle at the 2000 Olympics, is also a six-time national champion and qualified for the U.S. Olympic team in three events.

- Daily News Wire Services