Mark Fidrych is back to try, try again to pitch his way back onto the Detroit staff: try tonight against the Reds in an exhibition at Cincinnati,and if that goes well, try again when the Reds come to Tiger Stadium for a return exhibition Monday night.

The inimitable Bird was placed on the disabled list at season's start . In his struggle to put in the past the arm troubel that cut his 1977 campaign short at 64 and his 1978 season at 2-0, he worked only one inning against major league competition in spring training. Since then, he has been throwing in the bullpen and batting practice, and Manager Les Moss says, "He's been opening up pretty good-but on the side is not like a game."

It was a year yesterday since Fidrych, the pizazzy right-handed rookie of the year 1976, appeared in a big league box score, leaving after four innings against the White Sox.

Then there's the inimitable left-hander, Bill Lee: Two days since being fined $250 by the commissioner of baseball for telling the world he had smoked marijuana and one day since pitching a two-hit shutout over the Cubs, the Spaceman of the Expos was struck by a taxi as he jogged down a Montreal street, as is his wont from hotel to Olympic Statium. No broken bones, according to hospital X-rays, but his pitching elbow and left thigh were bruised.

Traffic is tough everywhere. Mile Roseman, with troubles of his own after breaking his right hand and losing his light-heavyweight title back to Victor Galidez in New Orleans, evidently witnessed a pretty good fistfight at Philadelphia International Airport Monday night. Seems, police say a motorcade had lined up outside a baggage terminal to pick up Rossman and take him home to nearby Turnersville, N.J., when cab driver Michael Inglese, 25, pulled up and blocked off the caravan. Inglese ended up punched up and stuffed into a car trunk, police reported. Rossman's father-name-ager, Jimmy DePiano, 55, and brother James DePiano Jr., 21, wound up arrested and charged with assault, recklessly endangering, making terroristic threats and conspiracy. Little brother Andy, who had a run at Galindez during the fight, evidently stayed out of this ruckus, as did the ex-champ.

John Tate, youthful Yank who kayoed Duane Bobick in a hurry recently, and Kallia Knoetze, the South African recently run out of the U.S.A., have been matched June 2 in Bophuthatswana, South Africa, says promoter Bob Arum, to determine a No. 1 challenger for WBC heavyweight champ Larry Holmes. . .A combine called Keystone Sports, headed by Brent D. Molovinsky of Rockville, has contracted to manage Derrik Holmes, the New Carrollton featherweight with designs on the professional big time. They're booked Holmes into Madison Square Garden on Friday's card featuring Howard Davis versus Leo Randolph. . .

Bernie Wolfe, figuring on leaving the Capitals in the NHL expansion draft-but at any rate playing again, somewhere-plans to make the area his permanent base and to that end, he's off and running in the world of business. The diminutive goalie with the bachelor of commerce degree from Sir George Williams U. in good old Montreal, majoring in financial Consultants of Silver Spring. Wolfe starts as an associate planner, working in the hockey off-season, while studying for his qualification as a certified financial planner (CFP) who can eventually look back at hockey and say. "Those were the days. . .but who needs 'em?" Wolfe and wife, who live in the country near Upper Marlboro, are expecting No. 2 offspring in three weeks. Ber-nie!

Among 70 (mostly college) stars invited to try out at Bloomington, Ind., starting today under Coach Bobby Knight for the U.S. entry in the Pan American Games (at San Juan, July 1-15): Maryland's Buck Williams, Viriginia's Jeff Lamp, Georgetown's Craig Shelton and John Duren. Two high schoolers among candidates: Ralph Sampson, you know him, and Illinoisan Isiah Thomas-already signed by Knight for his Indiana Hoosiers. . .

ACC spring athlete of (last) week: Neil Simons, Clemson center fielder out of Peary High in Montgomery County. First, he clouted three homers, bathing in 10 runs, as Tigers tied the NCAA scoring record in walloping N.C. State. Next day, he made several spectacular catches to thwart Wake Forest, 8-6. Day after that 328 batsman Simons hit his eighth home run of the season, giving him 33 RBI in 31 Tiger games.

Oh, that record score? Clemson 41, N.C. State 9 . . . So it wasa little windy-but 41-9!