Tyson Fury, and it ain't even close.
Murray - has won Tennis tournaments before. He will win more in the future.
Lewis - has won races & titles before. He will win more in the future
Compare that to Tyson's achievement...
Firstly, he was up against the undisputed HW champion of the world. A HW champion who has reigned supreme for 10 years. A HW champion who has decimated all-comers and boasts a 78% KO percentage. A HW champion who was recognised as one of THE best pound-for-pound fighters on the planet. A HW champion, who'd barely lost a round, let alone a fight, for years. A HW champion who is destined for the Hall Of Fame, and who will be remembered as an All Time Great of HW boxing.
Let's not forget, every bookie had Wlad as a odds-on favourite while Tyson was 7/2 or 4/1. No-one gave Fury a chance. Wlad was this machine who was nailed on to destroy Fury and finish him with a brutal KO. Every Sky pundit, ex/current pro's, journalists & fans wrote him off.
Secondly, Fury went into the champions backyard, with all the champions stipulations. Wlad had everything his own way in negotiations. Also, Germany, is a country which is infamous for "visiting" fighters to get shafted by judges/referees & receive no recognition on the scorecards. But Tyson won by a clear UD, with 2 judges saying he only lost 3 rounds.
But his performance on the night, whilst not blood & thunder that is expected from HW boxing, has to be up there with some of the greatest achievements in British sporting history. If they'd made a film, with this storyline, everyone would have laughed and said it was ********, because it just wouldn't happen. But Tyson made it happen. He nullified, toyed-with & embarrassed one of the most dominant men in the sports history. And all this at the ripe-old-age of 27. Make no mistake, unlike Murray & Lewis, who will undoubtedly go on to repeat their successes again in the future, this probably won't happen again for years and years. If at all.
This achievement was the footballing equivalent of Southend going to the Nou Camp & beating Barca 4-0. With 10-men. On a Tuesday night.
For those reasons, he deserves to win.