Joe Gibbs is a happy man today and the Redskins have yet to take the field in Philadelphia against the Eagles.

The reason, son J.D., a ninth-grader at Bethlehem Baptist, who passed for four touchdowns yesterday in a 26-12 victory over Quantico. Gibbs passed for touchdowns of five, 15, 27 and eight yards.

Sharing the happiness is General Manager Bobby Beathard, whose son Casey threw three touchdown passes Friday night in Oakton's 21-19 triumph over Madison. Beathard had scoring plays of 90, 15 and 48 yards, two going to Jimmy Jauch, son of Federals Coach Ray Jauch.

Another Beathard son, Jeff, scored two touchdowns in Towson State's 60-0 victory over New York Tech last night.

And former Redskins back Terry Metcalf, who works for the Federals, watched his son score three touchdowns Friday in O'Connell's 33-3 victory over Yorktown. Eric Metcalf caught a 72-yard touchdown pass, ran 27 yards for a second score, and returned a punt 65 yards for a third touchdown . . .

A Dallas federal judge sentenced a convicted cocaine smuggler, who tried to subpoena two Dallas Cowboys players at his trial, to 25 years in prison.

Lauriberto Ignacio, a former Brazilian soccer player who had asked that Cowboys defensive end Harvey Martin and wide receiver Tony Hill be ordered to testify in his defense last month, was also fined $35,000 at his sentencing Friday. Ignacio was convicted in August of conspiring to smuggle cocaine from South America to Dallas and using the telephone to discuss drug deals . . .

Two players cut from the Cowboys' squad this summer and picked up by St. Louis have been giving Cardinal coaches inside information about Dallas, a St. Louis player has confirmed.

Linebacker Jim Eliopulos and defensive back Monte Hunter say they were hesitant to talk to the Cardinals about the Cowboys before their matchup Sunday noon. But St. Louis coaches asked them for inside information about Dallas, and Hunter said he reluctantly provided it . . .

Darrell Green, Babe Laufenberg and several other new Washington Redskins players will be honored at Touchdown Club luncheon Tuesday at noon.

Frank Herzog, sports director at WJLA-TV-7, will be master of ceremonies. Mike Allman, the Redskins' director of player personnel, will introduce the newcomers. Tickets, priced at $15 each, may be reserved by calling the club.