The serve starts every rally. You stand behind the baseline and hit the ball underhand — paddle moving upward, contact below your waist — diagonally into the opposite service box. It has to bounce before the returner can hit it, and the return has to bounce too, so the serve is never a pure weapon the way it is in tennis. Its job is different: start the rally on your terms, deep enough that the return is uncomfortable.
When you use it
To begin every point — which means a game gives you dozens of serves, and reliability beats brilliance. A deep serve near the baseline pushes the returner back and gives your team time. A missed serve gives away a rally you hadn't even started. The best servers at every level share one trait: they almost never miss.
What it looks like at each level
At 2.5, the serve is a hope — getting it in, in the right box, is the whole battle.
At 3.0, it's consistent and lands mid-box or deeper; most rallies start fairly.
At 3.5, placement arrives: serves go at backhands and corners, and depth is deliberate, not lucky.
At 4.0 and up, pace and spin vary from serve to serve — but the percentage stays high, because power never outranks putting the ball in play.
The mistake almost everyone makes
Hunting aces. Players swing out of their shoes for a serve the returner still gets to hit after a bounce — and donate faults for nothing. The equal-and-opposite error is babying it short, which lets the returner step in and dictate. One deep, reliable motion, repeated: that's the serve that quietly wins games.