Jimmy 'the c*nt' Connors - 1991
At the venerable age of 39, when most tennis players have long since given up the tennis whites for the commentary box to rehash tired cliches about 'digging deep', Connors stormed through the field at the US Open, reaching the semis and defeating his arch rival McEnroe en route. He lost, eventually, to a much younger and ginger(er) Jim Courier.
Andre 'The Punisher' Agassi - 1999
Having fallen down the rankings to 141 in 1997 - due to a combination of wrist injury, failing celebrity marriage, general ennui and, of course, a fondness for meth - Agassi reinvented himself with a rigorous conditioning and training programme, entry into Challenger Series events, and thus rediscovered his passion for the game. The approach paid off - by the end of 1998 he was back in the top ten, having won five titles that season. The comeback culminated, gloriously, in a five-set victory against Medvedev, having been two-sets down, in the 1999 Roland Garros final, and completion of the career slam.
'Pistol' Pete Sampras - 2002
Having failed to win a single tournament since 2000, and having crashed out of his beloved Wimbledon by the fourth round in 2001-2, Sampras entered the 2002 US Open an unfancied 17th seed. He went on to beat a young Tommy Haas, next year's winner Andy Roddick, and his old enemy Andre Agassi in the final to win his 14th and last major. It proved to be his swansong in the men's game, but what a way to go.
Rafael 'Rafa' Nadal - 2013
Recuperating from knee tendinitis having missed the Olympics, the US Open in late 2012 and Australian Open at the start of the season, having been written off by many as physically finished, Nadal stormed back to capture both RG and the US Open in 2013, getting the better of his closest rival Djokovic in both tournaments. He ended the year as n.1. In total he won 10 titles, including five Masters series events.
Roger 'Tennis' Federer - 2017
Having lost his footing and his confidence against Raonic in Wimbledon semis in 2016, leading to an abrupt halt to his season to rest a troublesome knee, many speculated Federer might just, finally, be done at top-level tennis events. How wrong they were. After getting his feet wet once more at the Hopman Cup in early 2017, Federer got betterer and betterer in the first major of the season, beating Nishikori, Wawrinka and - astoundingly - his greatest rival Nadal in five-set matches to clinch the title, his record 18th major. He followed that up just a day ago with an Indian Wells title, becoming the oldest ever men's Masters 1000 champion in the process. Incredibly, he beat Nadal once more, fairly convincingly, to to turn the match-up on its head. Federer's massively improved backhand has been instrumental in his recent success.
Which is the best? Discuss.