Forty smackers, fight fans, gets you into Capital Centre Nov. 25 for Sugar Ray Leonard-Roberto Duran II -- and that's the bargain rate.

It's $40 through Nov. 24; day of fight, $50. And it's $50 right now to reserve for the Centre's downtown branch of the closed-circuit show, Washington Hilton. Maurice Hope and Carlos Herrera, boxing, in London for Hope's WBC light-middleweight title, and Marvin Camel-carlos de Leon, from New Orleans for Camel's cruiserweight crown, precede the welterweight biggie from the Louisiana Superdome -- where, you know, ringside seats run $1,000. . .

Meanwhile, NBC will be proud as a peacock to show you at home, free, Washington's Irish Mike Baker (who lost to Hope last year) vesus unbeaten young Tony Ayala from Lake Tahor, Nev., Saturday afternoon, Nov. 1. . . Even as you'll presumably be glad you saw on CBS this Saturday from Bophuthatswana, Mike Weaver's WBA heavyweight title defense against Gerrie Goetzee, for which the principals passed their physicals yesterday. . .

The N.Y. Mets, hoping winning ways rub off, have hired Bob Gibson, no less, to help coach pitchers and Alan Harazin, Oriole v.p.-business affairs, as a vice president.

Frank Robinson, Balitmore coach who broke the color line to manage Cleveland in '75, is identified by a Red Sox "high official" as one of the three men in the running to manage Boston (!). . .

The Dodgers met in Los Angeles yesterday with their Dusty Baker and the outfielder's agent, Jerry Kapstein, negotiating to satisfy Baker with a contract to turn him off the free agent route. If Baker gets big Dodger dollars, it could spell nix by L.A. to its pending deal for the Red Sox' Fred Lynn, a bigger-bucks guy. . .

Dick Vermeil, the Philadelphia Eagle coach, related, "I told Mike when I released him that if he didn't have a job within a year, I would give him a job" -- and gave fullback Mike Hogan a job. So what if the Giants judged Hogan washed up at 25 in letting him go last week? Vermeil says, "He was out of work and I need some help here (at running back)." Vermeil dropped Hogan in summer, 1979, following a drug bust; eventually, Hogan -- by then a 49er -- was cleared. . . f

Welcomed back by Cleveland Browns after a briefer parting: Charles White, he of the Heisman Trophy. White on Wednesday phoned Coach Sam Rutigliano to say he would be late for practice; never showed up. He reported yesterday, though, saying he overslept, admitting it "was just a mistake, a bad mistake," and gamely facing up to a fine that Rutigliano noted could, if the club so chose, run as high as one-sixteenth of White's fat 1980 salary. . .

FF followup: Erring Larry Mucker waived by Tampa Bay.

Retired: Codex, the 3-year-old colt with the controversial Preakness victory over Genuine Risk. Syndicated for $6.2 million, he'll get even closer to the ladies than he did to Risk in the Pimlico bumping incident, now that heads for stud at Tartan Farm, Ocala, Fla.