BASEBALL * Commissioner's Office -- Placed Philadelphia outfielder Lenny Dykstra on probation for one year for gambling activity.

BASKETBALL National Basketball Association * New Jersey Nets -- Placed Chris Dudley, center, on the injured list. Activated Kurk Lee, forward, from the injured list.

World Basketball League * Florida Jades -- Acquired the rights to James Blackmon and Haywoode Workman, guards, and Winston Morgan and Rick Calloway, forwards.

* Youngstown Pride -- Traded the rights to Willie Bland, forward, and Keith Smart, guard, to the Halifax Windjammers for the rights to Darryl Johnson, guard.

* Halifax Windjammers -- Acquired the rights to Milt Newton, Steven Bardo, Marty Simmons, and Lenzie Howell, forwards.

FOOTBALL National Football League * Dallas Cowboys -- Agreed to terms with Alfredo Roberts, tight end, and Odie Harris, defensive back.