Did you
know that more traffic accidents happen at slower speeds?
Why? Distractions. The mind wanders when it thinks it has
plenty of time to react. Tennis players fall victim to the
same problem when hitting slow balls.
When
hitting a faster ball, you automatically focus on the
incoming ball and the task of returning it. When "waiting"
on a slower ball you might start considering all the options
and lose concentration. Given enough time, some players even
start doubting their strokes and short arm the shot(tighten
up and swing tentatively).
Set up a practice match with a
friend that you know hits slower shots and work on your
focus and concentration. Remember, practice focusing as much
or more on the slow ball so you can avoid "accidents" on the
court.