In the meantime , in the corner of his eye Federer is in the ascendancy , gaining speed and momentum .
The opponent in this brief moment in time has already assessed whether his shot fulfills the intended purpose of ending the point .
In the meantime , in the corner of opponent 's eye Federer is in the ascendancy , gaining speed and momentum .
The opponent in this brief moment in time has already assessed whether his shot fulfills the intended purpose of ending the point .