He was frightening good against Tomas Berdych in yesterday 's quarterfinal , committing only 10 unforced errors while hardly holding back .
As a match , it demonstrated that form is an ephemeral thing , even for Nadal on red , low - altitude clay .
Nadal was frightening good against Tomas Berdych in yesterday 's quarterfinal , committing only 10 unforced errors while hardly holding back .
As a match , it demonstrated that form is an ephemeral thing , even for Nadal on red , low - altitude clay .