John Hadl left a cloud of dust--or dirt, rival recruiters allege--at alma mater Kansas when he transferred his offensive coordinating activities from KU to the Los Angeles Rams last week. Its shape suggests one more NCAA probe in Big Eight land.

Kansas City newspapers say KU got written notice two weeks ago that the rules enforcers are "considering" investigating alleged Jayhawk recruiting infractions. Dave Hart, Missouri athletic director, and Jim Dickey, Kansas State football coach, are quoted as accusers.

Hart: "Our coaches believe there was something wrong. They turned them in."

Dickey: "We had 20 (alleged violations counted) against them . . ."

Anonymous opposing coach: "Some people said that Hadl was getting the heat, and that's why he left."

Counters Don Fambrough, Kansas' head coach: "John left because he had a tremendous opportunity . . ." And Hadl: "You hear that kind of talk every time you have a good recruiting year. There is nothing to it" . . .

Skeets Nehemiah, the hurdling champion out of Maryland trying out around the NFL lately: he could be about to sign with those champions, the 49ers. A club spokesman says Nehemiah has been to San Francisco twice, agent Ron Stanko has sat down and talked terms . . .

Champion Jack Dempsey, 86, fights on. Wife Deana reported he had a pacemaker implanted yesterday--"Jack did not have a heart attack; his heart was beating on the slow side (when he was hospitalized Sunday)"--and "is resting well, in satisfactory condition" . . .

Julius Erving hadn't missed a 76er game in two years until excused from last night's date at Indiana with a virus--so wasn't that Philly newspaper a bit snide in calling it "NBA flu," said to hit mostly veteran players near regular season grind's end? . . . Pittsburgh 1979 World Series hero Jim Bibby, 19-6 in 1980, his shoulder gone stiff during 1981 season: rotator cuff surgery, April 22 . . . Another ailing Astro: Craig Reynolds disabled with chronic "benign position vertigo"--gets dizzy when his head is turned a certain way . . .

Bob Weinhauer, 99-45 at Penn, became Arizona State basketball coach yesterday. He says Tom Schneider, his assistant via George Washington staff, "should be strongly considered" to succeed him. Else, Weinhauer might bring him to Tempe. An obvious Penn possibility: former Quaker star Craig Littlepage, the Virginia assistant . . . Furman's choice is Jene Davis, from Bob Knight's Indiana staff to program of his own a la colleague Gerry Gimelstob-to-GW in '81 . . . The Wisconsin job is vacant again, already. Ken Anderson, veteran coach at Wisconsin-Eau Claire who took the Madison job last week, changed his mind . . .

Big-name Redskins, Bullets, Capitals will mingle with fandom Saturday at a Breakfast With Champions (and raffle), 10 a.m. to 1 p.m., at (and for benefit of) Capital Children's Museum, 800 Third St. NE. Adults, $25; children, $5 . . . The Harden & Weaver golf and tennis tournament for Children's Hospital has become so popular that the 12th annual at Montgomery Village grows to a three-day stand, June 9-11. Sponsoring WMAL and Kettler Bros. "hold the line" at $150 per entrant.

H&W tennis helper Jay Phillips, Bullis coach, busts buttons today as his school's No. 1, Danny Goldie of McLean, declares for Stanford--where renowned Dick Gould coaches . . . John McEnroe (ex-Stanford) after 3 1/2 weeks out with achy ankle beat Roscoe Tanner (ex-Stanford) in a St. Louis exhibition--and labeled Bjorn Borg "really a question mark" after five months off . . . Wimbledon decides Thursday whether Borg must go through qualifying. Borg says, if so required, he might, "but if they put me in the main draw, I would play for sure" . . . Another McLean stepper-up: Brien McInerney, Langley High grad now Jacksonville U. senior. A 6-foot-2 goalkeeper, signed with Nashville, American Soccer League.

A. Sheriff of DeKalb County, Ga.: Pat Jarvis, ex-Brave pitcher . . . Q. Men's singles leader in American Bowling Congress meet at Baltimore; a capital fellow???