The serve is the only shot in tennis where you have complete control. No one is hitting the ball at you — you set the pace, the placement, and the spin. Yet for most recreational players, the serve is their weakest shot. Here's a systematic approach to building a serve that wins free points.
If you're serving with a forehand grip (Eastern or Semi-Western), you're capping your potential. The Continental grip — sometimes called the "hammer" grip — is essential for generating spin, accessing different serve types, and protecting your shoulder from injury.
To find it: hold the racket like a hammer, as if you're about to hammer a nail with the edge of the frame. The base knuckle of your index finger sits on bevel 2. It will feel awkward at first. That's normal. Virtually every professional player serves with this grip.
An inconsistent toss is the #1 cause of double faults. The toss should be a controlled lift, not a throw. Common mistakes:
For a flat serve, toss slightly to the right of your head (for right-handers), about 12 inches in front of the baseline. For a slice serve, toss further right. For a kick serve, toss above your head or slightly to the left.
The trophy position is the moment where your tossing arm is extended upward, your racket arm is bent with the racket pointing up (like the figure on a trophy), and your weight is loaded. This is the coil point — everything before it is preparation, everything after is acceleration. The "back-scratch" position, where the racket drops behind your back, comes after the trophy: it happens naturally as your legs drive up, not as something you hold.
Key checkpoints:
A powerful serve uses the entire body, not just the arm. The sequence is: legs push up → hips rotate → torso rotates → shoulder accelerates → arm extends → wrist pronates. Each link adds speed to the next. Skip a link and you lose 10-20mph.
The most commonly skipped link is the leg drive. Recreational players often serve flat-footed, generating all their power from the arm and shoulder. This limits speed and increases injury risk. Push up off both feet — many advanced players leave the ground during their serve.
Pronation is the inward rotation of your forearm at contact. It's what turns a 60mph patty-cake serve into a 90mph weapon. Without pronation, you're essentially pushing the ball with a flat racket face.
For a flat serve: pronate through the ball so the racket face ends up pointing toward the opposite fence. For a slice serve: pronate slightly later, brushing around the right side of the ball. For a kick serve: pronate upward, brushing up the back of the ball.
Most recreational players don't pronate at all. If you can hear a "whoosh" sound when you swing your racket without a ball, you're starting to pronate. If the racket is silent, you're arm-pushing.
Most recreational players have the same serve for first and second — just hit softer on the second. This is backwards. Your second serve should be a fundamentally different shot: more spin, more margin, and ironically often hit with similar racket speed to the first.
The kick serve (topspin serve) is the ideal second serve. It clears the net by 3-4 feet, then dips down into the box. Because of the high net clearance, it's extremely reliable. And because of the topspin, it bounces high and kicks toward the receiver's backhand.
Most of these mistakes are invisible from the inside — they feel normal because they're your normal. TorqAI spots them from a filmed serve and tells you which one is costing you the most.
TorqAI analyzes your serve from practice video — trophy position, contact point, and follow-through — and gives you coaching feedback on every serve, plus a per-stroke NTRP rating to track your improvement over time. Free to start on iOS.
Download TorqAIUsually two causes stack: an inconsistent toss (the #1 driver — every toss in a different spot means every swing is an improvisation) and a second serve that's just a softer first serve. A slow, flat second serve actually has the least margin for error. Groove your toss first, then build a spin second serve that clears the net high and dips in.
The Continental grip — hold the racket like a hammer, base knuckle of the index finger on bevel 2. It unlocks spin, all serve types, and a healthier shoulder position. It feels awkward for the first few weeks after switching from a forehand grip; that's normal and worth pushing through.
Use more of your body, not more arm. Speed comes from the kinetic chain: legs push up, hips and torso rotate, the shoulder accelerates, and the forearm pronates through contact. The most commonly skipped link for recreational players is the leg drive — serving flat-footed caps your speed and loads the shoulder instead.
A topspin ("kick") serve. It crosses the net 3-4 feet high — a huge safety margin — then the spin pulls it down into the box and kicks it up toward the receiver's backhand. Counterintuitively, you swing at similar speed to a first serve; the spin, not a slower swing, is what keeps it in.
Around full arm-plus-racket extension, give or take a few inches — high enough that you're not rushed, low enough that you're not waiting on a dropping ball. More important than exact height is consistency of placement: a controlled lift released from the fingertips, landing in the same spot every time. If your toss would land more than 6 inches from your racket face laid on the ground in front of you, work on the toss before anything else.