More than 21,000 seats were added in the south end zone in 1953, turning the stadium into a 67,720-seat bowl, making Tiger Stadium the largest on-campus stadium in the SEC, a distinction it would hold until Neyland Stadium expanded to 80,250 in 1976. Unlike the existing stadium structure, they were double-decked in order to fit within the space provided. The first of the two upper decks was added to the west side of the stadium in 1978 to bring capacity to approximately 78,000.