Following through on its threat, a minority rights group has called on black high school athletes to reject overtures to play at Ohio State.

Last week, the school hired Arizona State's John Cooper as its new football coach. Cooper is white. The minority group, Coalition Against Racism in Colleges and Universities, had demanded a black coach be hired.

Charles Ross, an associate professor of social work at Ohio State and a leader of the group, said letters will be sent to black high school athletes suggesting they attend college somewhere other than Ohio State . . .

Harry Edwards, the head of professional baseball's minority hiring program, called for a boycott of the Kansas athletic program by black athletes because of the way he said the university filled its head football coaching position.

The Jayhawks, 0-10-1 in 1986, fired Coach Bob Valesente at the end of the season and have replaced him with former Kent State Coach Glen Mason. Edwards says even though qualified black candidates applied for the job, the university "did not even reply" to those interview requests . . .

Green Bay Packers Coach Forrest Gregg, whose five-year contract with the team expires at the end of next season, denied a published report he is a finalist for the job of head football coach at his alma mater, Southern Methodist University.

"I'm in Dallas to visit my daughter, period!" Gregg said in a statement issued through Green Bay headquarters in response to the report published by the Dallas Times-Herald Wednesday . . .

Dick MacPherson, who led Syracuse to an 11-0-1 record and the No. 4 national ranking, was named major college coach of the year by the American Football Coaches Association.

MacPherson will be honored tonight at the AFCA's annual banquet in Atlanta along with the coaches of the year in three other divisions -- Mark Duffner of Holy Cross in Division I-AA, Rick Rhoades of Troy State (Ala.) in College Division I and Walt Hameline of Wagner (N.Y.) in College Division II.