There's talk of a national baseball strike. Sports types who pay attention to such things believe a strike is unlikely, but two Washingtonians, Eric Yaverbaum and Jonathan Sawyer, are concerned. They have formed "Strike Back" to fight the possibility. And they are threatening major league baseball with a tooth for a tooth. For every day of a strike they will boycott a day. How they could actually pull such a thing off doesn't daunt them; they feel organized baseball is watching . . .

Jazz and blues singer Ray Charles is meeting with President Reagan tomorrow to highlight the beginning of a national public service advertising campaign in which the blind musician will promote the participation of disabled persons in American life. The campaign is sponsored by the National Organization on Disability and the Advertising Council . . .

The Media Industry Newsletter has made it official: Washingtonian Magazine is the second-biggest city magazine in the nation with a circulation of 140,000. No. 1 is Los Angeles Magazine . . .

L.A. Mayor Tom Bradley walked into Hugo's restaurant at the Hyatt Regency Capitol Hill Monday night for a quiet dinner when a group of Californians who happened to be dining there saw him and loudly applauded. The surprised Bradley smiled and waved as he walked to his table . . .

Actress Donna Reed lost her legal attempt yesterday to force the makers of "Dallas" to use her in the television series instead of Barbara Bel Geddes as matriarch of TV's Ewing clan. Los Angeles Superior Court Judge John Cole denied her request for a preliminary injunction, ruling that her contract allowed CBS and Lorimar to replace her with Bel Geddes, who originated the role of Miss Ellie . . .

Rita Jenrette was back in town yesterday for the first time since her divorce from former congressman John Jenrette, who is serving time in Atlanta on an Abscam conviction. She was here to appear in D.C. Superior Court to resolve the dispute over the couple's former home at 160 North Carolina Ave. SE. The case was continued until Aug. 14 so that her former husband can have a representative in court. Jenrette and her lawyer, Glenn Lewis, went to lunch at Joe & Mo's and she then returned to New York on the Metroliner . . .