[['outcome', 'date', 'championship', 'surface', 'opponent', 'score'], ['runner - up', '1971', 'merion , us', 'hard', 'clark graebner', '2 - 6 , 4 - 6 , 7 - 6 , 5 - 7'], ['runner - up', '1973', 'miami wct , us', 'hard', 'rod laver', '6 - 7 , 3 - 6 , 5 - 7'], ['winner', '1974', 'atlanta wct , us', 'clay', 'jiří hřebec', '6 - 2 , 6 - 1'], ['runner - up', '1974', 'charlotte , us', 'clay', 'jeff borowiak', '4 - 6 , 7 - 5 , 6 - 7'], ['winner', '1974', 'adelaide , australia', 'grass', 'geoff masters', '6 - 2 , 6 - 3 , 6 - 2'], ['runner - up', '1975', 'fort worth wct , us', 'hard', 'john alexander', '6 - 7 , 6 - 4 , 3 - 6'], ['winner', '1975', 'san antonio wct , us', 'hard', 'stan smith', '7 - 5 , 2 - 6 , 7 - 6'], ['runner - up', '1975', 'washington indoor wct , us', 'carpet', 'mark cox', '2 - 6 , 6 - 7'], ['winner', '1976', 'lagos wct , nigeria', 'clay', 'arthur ashe', '6 - 3 , 6 - 2'], ['runner - up', '1976', 'sydney outdoor , australia', 'grass', 'tony roche', '3 - 6 , 6 - 3 , 3 - 6 , 4 - 6'], ['winner', '1977', 'philadelphia wct , us', 'carpet', 'jimmy connors', '3 - 6 , 6 - 4 , 3 - 6 , 6 - 1 , 6 - 2'], ['winner', '1977', 'toronto indoor wct , canada', 'carpet', 'jimmy connors', '5 - 6 , ret'], ['winner', '1977', 'rotterdam , netherlands', 'carpet', 'ilie năstase', '2 - 6 , 6 - 3 , 6 - 3'], ['runner - up', '1977', 'dallas wct , us - wct finals', 'carpet', 'jimmy connors', '7 - 6 , 1 - 6 , 4 - 6 , 3 - 6'], ['runner - up', '1978', 'birmingham wct , us', 'carpet', 'björn borg', '6 - 7 , 5 - 7'], ['winner', '1978', 'little rock , us', 'carpet', 'hank pfister', '6 - 4 , 3 - 5 , ret'], ['runner - up', '1978', 'san francisco , us', 'carpet', 'john mcenroe', '6 - 2 , 6 - 7 , 2 - 6'], ['runner - up', '1981', 'south orange , us', 'clay', 'shlomo glickstein', '3 - 6 , 7 - 5 , 4 - 6']]
no 2 Championship were ever played at the same location
no 2 [ENT] were ever played at the same location