Tennessee senior quarterback Tony Robinson, a Heisman Trophy contender until he suffered a knee injury at midseason, was arrested yesterday and charged with selling cocaine to an undercover police officer in Knoxville.

Robinson, 21, and his roommate, former Tennessee running back Kenneth (B.B.) Cooper, 22, were arrested at 8:30 a.m. at Papermill Square Apartments by officers.

Robinson and Cooper were charged with one count each of sale and delivery of cocaine, a felony punishable by four to 10 years in prison. They were booked at the city jail and spent about 30 minutes behind bars before each posted a $1,000 bond, Sgt. Randy Lockmiller said.

The Knoxville News-Sentinel monitored police radio transmissions and reported that narcotics officers discussed purchasing cocaine at the Robinson-Cooper apartment Tuesday night.

"What did we get?" one detective asked another over the radio after a visit to the apartment.

"An ounce and a sixteenth. The sixteenth came directly from Robinson," an undercover agent answered . . .

Sophomore guard Delray Brooks, who shared the Indiana "Mr. Basketball" award and was recognized as the national player of the year as a high school senior, has decided to quit the Indiana University team.

The 6-foot-4 Brooks is leaving with the hope of attending a school where he can get more playing time, Coach Bob Knight said . . .

President Reagan will present the Commander-in-Chief's Trophy to the Air Force Academy football team in a White House ceremony on Jan. 16, said Col. John Clune, the academy's athletic director.

Air Force won the trophy, symbolic of football supremacy among the service academies, for the third time in four years by beating Navy and Army this season.