In the 1974 ACC Men 's Basketball Tournament , Maryland was defeated by North Carolina State University in overtime 103-100 , eliminating it from participating in that season 's NCAA basketball tournament . Many consider it to be one of the greatest college basketball games of all time . NC State eventually went on to win the 1974 National Championship , with Maryland finishing No. 4 in the final Associated Press poll . One great team knocking the other out of the NCAA Tournament prompted its officials to make a landmark decision the next year , expanding its field from 23 to 32 teams , thereby potentially opening the door for more than one team from a conference . Today , that field has been enlarged to nearly 70 teams
1974 ACC Men 's Basketball Tournament
1974 ACC Men's Basketball Tournament
Lefty Driesell