The promoter of today's professional boxing bouts at the Naval Academy is advising fans to watch the two main events on television (WMAL-TV-7, 3 p.m.).

Don King Productions annouced Thursday that the second series of Quarterfinals in the U.S. Boxing Championship, headed by heavyweights Johnny Boudreaux of Houston and Scott LeDoux of Crosby-Ironton, Minn., was a sellout.

That meant all of the 7,500 free tickets for the eight-round bouts in Halsey field house had been distributed.

After about 5,000 tickets, or invitations, were issued to midshipmen and others associated with the academy, 2,000 were made available to people in Annapolis and they were snapped up quickly.

The card includes three area favorites - light heavyweight Biff Cline (who will be in one of the televised bouts), middleweight Leo Saenz and welterweight Johnny Gant.

Boudreaux, 24, has won 19 of 21 bouts, but has scored only seven knockouts and was unimpressive in losing a 10-round decision to Howard Smith of Los Angeles on the George Foreman-Joe Frazier card in June.

Yet, he is a handsome fellow uninhibited about saying, "I'm the prettiest," Ali notwithstanding, and has a fast mouth to match the fast hands of a stylish boxer.

That style brings down boos on Boudreaux at times, but in the best illustration of boxing now being half show business he says, "They boo me because I don't punch hard enough. That's O.K. if they keep coming to my fights. They can boo me all the way to the championship."

One of his audacities is, "I know Duane Bobick doesn't want to tangle with me. He would be a nice fat juicy strawberry for me."

Boudreaux is favored over LeDoux, who has won 19 of 24 bouts, 12 by knockouts, and has one draw.

Cline, a former policeman, has a 13-0 record (not counting a noncontest bout). He won them all by knockouts and his father-manager, Chris Cline, is irritated by suggestions that the opposition has been handpicked.

"They say Biff has fought a lot of Pillsbury doughboys," Cline says. "Well, every young thing is he's managed right. You look up Rocky Marciano's early record; he fought his brother three times, under different names."

Cline found himself cast against one of those doughboys, overweight Jimmy Davis, on the Ali-Young card, at capital centre last year. Davis looked as though he needed a bra and a hairnet.

This time, Cline is taking on Ray Elson of New York, who has on 14 of his 16 bouts, nine by knockouts.

In the nontelevised bouts, which begin at 12:30 p.m., middleweight Saenz (23-2-1) opposes Casee Gacic, Cleveland (10-4-3); welterweight Gant (38-10-3) faces Anthony House, Winston-Salem, N.C. (17-3-2); lightweight Edwin Viruet, Puerto Rico (23-2-2), takes on Tommy Rose, Boston (22-1-0), and featherweight David Vasquez, New York (17-8-0), meets Richard Rozelle, Columbus, Ohio (10-0).