Reggie Jackson makes more money from television work than he earns for playing baseball, declares TV Guide.

The magazine tells this week's readers that the New York Yankee swinger's incomne for video appearances has reached $750,000 a year; as a designated hitter and sometimes right fielder, he makes $600,000. Jackson stars in a half-dozen or so commercials and has an ABC-TV contract to cover several sporting events.

If Jackson feels pressure to snap the slump that has mired him in the .200 neighborhood, then, it could be as much from the need to keep up appearnaces to keep the sponsors sponsoring as to show Yank owner George Steinbrenner or whomever 1981 postseason free agent Jackson might concern that he deserves more than his $600,000 a year. Anyhow, who's Dave Winfield? Leading outfielder in AL allstar voting is initialed R.J.!

But it's a tough life. Our hero, says TV Guide, had to bite into 44 "Reggie!" bars befolre he got it right for one commercial.

John Lloyd has been given one of six wild-card exemptions into Wimbledon despite his current low ranking -- well, he was Britain's top singles player before he lost form two years ago -- but wife Chris Evert Lloyd could miss the 1981 classic. Typically, she gave no excuse (that we know of) for losing to Hana Mandikova in the French Open semis, but here she is a scratch from the Surrey grss court event this week and doubtful or Eastbourne next week -- torn tendon, right knee, stemming from the Paris tournament. British Davis Cup physiotherapist John Mathews is trying to get '78-'79-'80 runner-up Evert fit by Wimbledon's June 22 start. . . Billie Jean King says it will be "a real wrench" not playing Wimbledon '81 but because of her age and her knee problems, Surrey could mark her last competitive appearance in Britain. But, listen, King says, don't get the wrong idea: "I was not afraid to go out there. I decided eight weeks ago that I would not compete at Wimbledon." Anyway, she'll be there for NBC-TV. . . .

Reserved seats at $10, $13, $16 and $20 are now on sale for Redskins-Kansas City Chiefs preseason football, Aug. 7, a Friday nighter at RFK launching the Joe Gibbs regime. Tickets available at the stadium; cosponsoring Almas Temple Shrine; American Security Bank, 1612 K St. NW; Ticketron. . .

That's alot of "Hail to the Redskins" coming up, and Barnee Breeskin, composer of same, is plugging second annul M.S. Day at RFK -- in which the game is soccer, June 24, Diplomats-Jacksonville -- but finds Joe Theismann up front, honorary chairman as the National Multiple Sclerosis Society stages a 5:30 p.m. buffet reception wsith Bullets, Caps, Dips, Redskins there for the greeting; free Diplomat jerseys for first 5,000 youngsters in the ball park, and recognition for 1981 MS Read-a-thon stars before 7:30 NASL game kickoff. Including reception, $30; kids, $15. . .

Ross Fields was ordered to jail by a Los Angeles municipal judge yesterday, causing Harold Smith to miss a sentencing date in federal court -- or something like that. Boxing promoter Fields, a.k.a. Smith, a figure linked to a $21.3 million swindle, was ordered held pending extradition to North Carolina on a charge of forging a $196 check in 1975. That left U.s. District Court to set back a week his sentencing for falsifying a passport application. . .

On a recent visit to Phoenix before Sugar Ray Leonard set up camp there to prepare for Ayub Kalule June 25 in Houston, Leonard's trainer Janks Morton said he had bought himself a home in Arizona's Paradise Valley -- and that Sugar Ray was househunting the area, too. But, s'all right, fans: no plans, he appended, for Our Sugar to set up permanent base there. Probably less than ever after the weekend hassle when Leonard moved from a commercial gym to a youth center because the gym wasn't turning over the $2 admission to Sugar's workouts to that youth center, as promised.