McEnroeisanartist
Hall of Fame
Which opponents who surprisingly defeated Federer in a Grand Slam have most disappointed you?
2009 US Open - Del Potro - One Grand Slam semifinal since
2013 French Open - Tsonga - One Grand Slam semifinal since
2013 Wimbledon - Stakhovsky - loses first round in 6 of the next 10 Grand Slams
2013 US Open - Robredo - hasn't reach a Grand Slam quarterfinal
2014 French Open - Gulbis - loses first round in 3 of the next 6 Grand Slams
2009 US Open - Del Potro - One Grand Slam semifinal since
2013 French Open - Tsonga - One Grand Slam semifinal since
2013 Wimbledon - Stakhovsky - loses first round in 6 of the next 10 Grand Slams
2013 US Open - Robredo - hasn't reach a Grand Slam quarterfinal
2014 French Open - Gulbis - loses first round in 3 of the next 6 Grand Slams