If you foot fault, someone should correct you. if you know you foot fault, that's cheating. cheating should not
be tolerated in tennis, no matter what the level.
if its social tennis, i will let the foot faults go. even if the guy serve and volleys like Fed.
if its competition, i will point it out, even if his serve is slower than 30 mph. if it persists, i will
stop the match and call for a linesperson.
i recall one USTA match where the opponent got upset with me calling footfaults, he imploded and lost the match,
when i pointed out the foot faults.
he wouldnt shake my hand afterwards.
usually you can only tell in doubles, as with singles, its hard to see what the opponents feet are doing when you are tracking the serve.
z