My sense is that Roger Federer owes Nikolay Davydenko (pictured above) a drink or two for knocking out Guillermo Cañas in straight sets in the Roland Garros quarters. Now, instead of facing Cañas--who beat the #1 player twice in three weeks earlier this season (in Masters Series events, no less!)--in the semifinal on Friday, Federer will play Davydenko, against whom he holds an 8-0 advantage in previous matches played.