The Australian Open 2012 final between Novak Djokovic and Rafael Nadal was played for five hours and 53 minutes- the longest Grand Slam final of all time. Djokovic won the match with a scoreline of 5-7, 6-4, 6-2, 6-7(5), 7-5. Nadal, who has won 22 singles Grand Slam titles, has recently announced that he'll retire after 2024 Davis Cup finals.