Every team I've been on has always pushed this tactic. Everyone knows this shortcut to winning matches. Why deny it? Everyone slows down when the clock is ticking. I personally do not do this because I usually win handily anyway and don't need to resort to this.
Sandbagging and playing the clock is feverishly accepted and encouraged.
Anything to win.
4.0 USTA Glory and Rec Tennis Immortality.
This is a song about a car.