But speed is only a small part of tennis skills. Why is Monfils a bad player if speed is such a huge part of it? In table tennis when being explosive is even more important, I easily beat those players. Stamina, mental toughness, tactics, strategy, reading opponent, psychology, that is way more important. Nadal is way underrated in that department, they think it's just speed why he wins.There’s already a big difference between Nadal 2008 and the Nadal of 2010 movement-wise, the former is alot more explosive and faster too. Same can be said about 2006 Federer vs his post 2007 version. Unless they start serving like Isner or volley like Edberg, they Will never be as good as their younger versions.