I wouldn't for a moment think of not appreciating the game of players like Bjorn Borg, Mats Wilander, Pete Sampras, Ivan Lendl, Goran Ivanisevic, Roger Federer, Rafal Nadal, Nalbandian etc.
However to me sports is much more than winning. Any sport comes alive, when the game is accompanied by the distinct, deft personality of the player.
Based on this premise, my favourites are undoubtedly players like Jimmy Connors, John McEnroe, Boris Becker, Stefen Edberg, Pat Cash.