Football season is in swing already, Billy (Kilmer) Ball style, but Julius Caesar Watts has decided you can have it, either NFL or CFL style: he's going into the oil business.

"My heart is not in it," said Oklahoma's two-time Orange Bowl MVP by phone from Ottawa, Canada, to Oklahoma City. "I just decided it's not the best thing for J. C. Watts right now."

Watts, a scrambling-type quarterback, was projected by National Football League scouts as a better prospect to catch or knock down passes, rather than launch them, and it was the eighth round by the time the New York Jets drafted him. He didn't care for the Jets sales pitch, hit the trail for Ottawa and -- promised a crack at quarterbacking -- signed a two-year Rough Rider contract Sunday.

The next morning, Watts walked out of training camp, and Ottawa said it would not hold him to the contract. King Energy Corp. of Oklahoma City confirmed Watts is coming to work there . . .

Oh, as we were saying: Commissioner Bill Kilmer's American Football Association, full of eager beavers, had an opener in Roanoke Saturday night with the Virginia Hunters counting a house of 7,000 and beating the Orlando Americans, 30-27 . . .And Canadian league exhibition season begins this week, presumably with Vince Ferragamo and White Shoes Johnson of Montreal but not yet their fellow NFL refugee, James Scott. The ex-Bear has been AWOL from Alouette camp since joining the club. So has Tom Cusineau, the middle linebacker who had been rumbling about going NFL . . .

Garry Templeton, St. Louis' all-star shortstop, is "tired of this" under Whitey Herzog -- being dropped from leadoff to No. 3 in the batting order, Hezog complaining about apparently uninspired play from him on defense, the team slipping out of first place -- and for about the fourth tine in his Cardinal career, wants to be traded. "Put Tony Scott and me in a package deal and send us to San Diego for Ozzie (Smith) and Gene Richards," Templeton suggests. "We'll see," cogitates Trader Herzog . . .

The NBA championship series on CBS: live!!! Yes, bag-eyed basketball fans, prime time in 1982. Tell 'em about it, Captain Airwaves (TV Column, Style) . . .

They can't beat Larry Bird out of everything (like season and playoff MVP), and the Celtic nonpareil is first-team all-NBA. Bird had to beat out Adrian Dantley and Marques Johnson to do it, but joins Julius Erving at forward with Kareem Abdul-Jabbar at center, George Gervin and Dennis Johnson at guards in voting by a 69-member media panel. Still, Erving outpolled Bird, 130-126, of a possible 138 points.

The NBA draft: live!!! Courtesy of the Bullets. The general public is invited, free -- no parking fee, even! -- to Capital Centre to witness the June 9 talent grab with Washington G.M. Bob Ferry making 11th pick from a table in front of section 121 and draft central in New York covered by cable TV on Telscreen. Added attractions: Bullet 1980-81 highlights film, at 11:45, preceding noon draft, and door prizes . . .

In Raleigh, ACC officials meet today to decide which of about a dozen production companies wins the 1981-82 basketball television rights abandoned by C. D. Chesley . . . In Austin, U. of Texas seeks an athletic director. Bill Ellington, 60 is retiring to his ranch after 1 1/2 years as successor to Darrell Royal, whom he served as assistant a.d. and previously on football staff since 1959 . . . In Denver, the NHL Rockies did the expected, made Bert Marshall head coach, Colorado's sixth in five years in the league. Marshall coached the New York Islanders' Indianapolis affiliate the past two seasons . . . Yet another traffic death: iDon Ashby, 26, NHL forward with Edmonton, Colorado and Toronto; collision in British Columbia . . .

Grant Schneidman of Gaithersburg, aboard The Flying Dutchman, won the Gladstone Trophy as top American rider in the International Kentucky Horse Trials on the weekend at Lexington, sweeping dressage, cross country and stadium jumping. James Wofford of Upperville, Va., on Carawich won advanced division stadium jumping. Those rider/horse teams, and Karen Kende of Upperville with mount Kilgrogan, plus Julie Kovely, Marshall, Va., on Brandenburg as alternate, won places on the six-member U.S. team to compete in a similar three-day international event in September at Luhmuhlen, West Germany, a Warmup for the world equestrian championships also at Luhmuhlen.

Chuckie Driesell, Springbrook basketball star, "as of now" plans to attend Maryland -- where his father the southpaw coach tells Post reporter John Feinstein that the 6-foot-1 athlete would have to make it as a walk-on . . .

The Stadium Room at RFK goes to good use Wednesday evening (reception at 7, dinner at 8) with a "roast" of Tom Hurney Jr., former TD Club president and all-around good sport; $25 tab benefits Shaw Community Center Food Fund.