Billy Cannon Jr., the 1959 Heisman Trophy winner's son who created a stir a few weeks ago when Bowie Kuhn negated his selection by the New York Yankees in the baseball draft, has shaken up the home folks in Baton Rouge: signed a football grant-in-aid with Texas A&M -- Not Billy Cannon Sr.'s almater, Louisiana State.

On the whole, young Cannon would rather be in baseball right now, and would be but for his father's demands for a $300,000-range bonus that scared off all the big league clubs -- except the Yanks, leading to suspicions and Kuhn's action. Meanwhile:

"I've got to live my life. I CAN'T DO WHAT THEY SAY (LSU fans) want me to do," said the 6-4, 200 pound shortstop-wide receiver whose father's famous punt runback against Mississippi in 1958 led to LSU's only natoinal championship.

And dad put in, "We're trying to do what's best for our child. Every time he would touched a ball on a punt or a kickoff return people would have expected him to make an 89-yard run . . . I do practice (dentistry) here (Baton Rouge) and I do plan to be here the rest of my life. People who come to me aren't looking for an 89-yard run. They're looking for their girl to get good teeth" . . .

Gary Green is surely safe, for a long while, but the Capital feel they have another coaching comer in Bryan Murray, just handed the reins of the Hershey farm club. Murray coached the Caps' No. 1 draft choice, Darren Veitch, and two other NHL first-round picks with the Regina, Saskatchewan, Pats of the junior Western Hockey League last season. Murray steps in at Hershey for Doug Gibson, who led the Bears to the American Hockey League's Calder Cup as player-coach after Green moved up to Washington in early season. For all that, Gibson was not offered a job by the Caps, so is off to play in Europe -- accompanying ex-Capitals Bob Sirois and Bob Girard. Yes, ex-Caps. Not only had the two Bobs' positions at wings on the ice become tenuous, but their Montreal restaurant went bust. Sirois, in particular, leaves a sizable fan following here . . .

Meanwhile Herb Brooks, the U.S. Olympic hockey coach wooed by several NHL clubs, arrived in Switzerland yesterday to begin his new job as coach at the Alpine resort of Davos . . .

Alabama's Bear Bryant, that onetime Texas A&M coach, is said to be itching to get out of the hospital in Tuscaloosa to start after a repeat national title and those 19 victories he needs to beat Amos Alonzo Stagg's college football coaching record of 314. Bryant, 66, was admitted Saturday for "routine" tests after complaining of mild dizziness; may be out this weekend.

All-time Navy rushing leader Cleveland Cooper -- now 1st Lt. Cooper, USMC -- has been appointed to the academy's football coaching staff, in charge of the plebe and jayvee squads.

And play-by-play Navy football (with Pete Larson) on the academy network anchored by WRC-980, now that Tony Roberts is unavailable?

Ta-daa! Roberts' old radio sidekick at the demise of Washington Senators baseball -- Ron Menchine!