Of the 8 round 4 matches, 4 were won in "tennis" fashion and 3 via bumrooting (though two were very mild cases of bumrooting).
Federer hit 25 more winners than Moya (tremendous margin in 3 short sets) Ferrer hit 14 more winners than Gaudio Davydenko hit 25 more winners than Coria Robredo hit 9 more winners than Safin (very narrow margin over 5 sets)
Congrats to the guys who won without bumrooting.
Sadly, bumrooting was rewarded in three matches:
Hanescu hit 8 fewer winners than Naldoobian Nadal hit 3 fewer winners than Grosjean and the biggest bumrooter was Puerta, who hit 11 fewer winners than Acusoso in a short match.
So our round 4 "tennis skills" king is Federer, and our bumrooting bane is Puerta.....
-- "if federal judges have the final word over its meaning, the Constitution would be a mere thing of wax in the hands of the judiciary, which they may twist and shape into any form they please".