I agree Simon is a quality top 20/30 player, but that's beside the point. This thread is about the worst top 10 players, and he certainly overachieved to get to No6. To give an example, Philippousis' best ranking was No8, this is someone who made 2 slam finals, made several QFs and won 3 x Masters 1000 and more importantly he beat ATGs Sampras & Agassi at majors/masters on more than one occasion. Now compare that to Simon.