The record for most runs scored in an over in professional cricket is 77. Wellington's Bert Vance conceded 77 runs against Canterbury in a first-class match in 1990. He bowled 22-ball over, including 17 no-balls. Notably, the record for most runs scored in an over in T20I got broken on Tuesday, with Vanuatu's Nalin Nipiko conceding 39 runs against Samoa.