The fast, erratic, net-rushing tennis-player is a creature of impulse. There is no real system to his/her game, no understanding of your game. He will make brilliant coups on the spur of the moment, mostly by instinct; but there is no, mental power of consistent thinking. It is an fascinating type of character.
The really unnerving player is the one who mixes his/her strategy from back to fore court under the command of an ever-alert mind. This...