If you serve low, then the opposing team cannot automatically smash it right back into the court. A smash is a fast downward shot. By hitting it low, you immediately take away their ability to do that, but instead might force them to hit it upward. This then opens up your opportunity to begin smashing/being offensive.
Chat with our AI personalities
A low serve is a serve that just goes over the net and lands in the forecourt of your opponent, this is mostly used in doubles but if you use every now and again in a singles match you might catch you opponent off guard and win an easy point,