Flat, slice and kick serves
The three serves and what actually separates them — the contact point on the ball and the toss that makes it possible — plus what each one does to the ball after it bounces.
Overview
A tennis serve has one legal definition and three practical variants. The Rules require only that the server release the ball by hand in any direction and hit it with the racket before it hits the ground; what the player does to the ball at contact is entirely open.
Flat, slice and kick differ in where the racket strikes the ball and therefore what rotation it leaves with. Everything else — the bounce, the direction it moves, how high it sits up — follows from that.
The flat serve
A flat serve strikes the back of the ball with minimal brushing, producing very little rotation and the highest possible speed. It stays low after the bounce and gives the returner the least time.
It also has the smallest margin. Without topspin to bring it down, the ball travels closer to a straight line, so the window between the net and the service line is at its narrowest. This is why the flat serve is usually a first serve only.
The slice serve
A slice serve brushes around the outside of the ball, imparting sidespin. The ball curves in flight away from a right-handed server's forehand side and skids low and sideways off the bounce.
Its value is geometric rather than a matter of pace: a slice serve out wide drags the returner off the court, which opens the whole court for the next shot. That combination — serve wide, hit into the space — is the most reliable pattern in the sport.
The kick serve
A kick serve brushes up and across the back of the ball, producing topspin with a sidespin component. The topspin brings the ball down steeply, which lets the server hit it higher over the net with a much larger margin for error.
After the bounce it kicks up and sideways, often above the returner's comfortable strike zone. Because it combines a large safety margin with an awkward bounce, it is the standard second serve at every level where it can be executed.
The toss gives the serve away
Each variant is easiest from a slightly different toss position, and that is the main way a returner reads the serve before it is struck. A returner watching only the ball is reading it much later than one watching the toss.
A server who can produce all three from a consistent toss removes that information. This is a genuine technical goal rather than a refinement, and it is the reason serve practice emphasises the toss as much as the strike.
How to do it
- 1Set a consistent stance and toss, and keep it consistent across all three serves.
- 2For a flat serve, strike the back of the ball with the racket face square at contact.
- 3For a slice serve, brush around the outside of the ball rather than through it.
- 4For a kick serve, brush upwards and across the back of the ball.
- 5Accelerate the racket head through contact rather than pushing at the ball.
- 6Aim higher over the net on spin serves — the spin is what brings the ball down.
Key points
- The Rules fix only that the ball is released by hand and struck before it lands.
- Flat serves are fastest but have the smallest margin over the net.
- A slice serve out wide drags the returner off court and opens the next shot.
- A kick serve's topspin creates margin and produces an awkward high bounce.
- A consistent toss across all three denies the returner an early read.
Where it’s used
Sports that use flat, slice and kick serves:
Related techniques
Topspin Forehand
A forehand groundstroke hit with a low-to-high swing that puts forward spin on the ball so it dips and kicks up on landing.
One-Handed Backhand
A backhand groundstroke struck with a single hand on the grip, driving through the ball with a full extension of the hitting arm.
Tennis Serve
The overhead stroke that starts every point, hit from behind the baseline into the diagonally opposite service box.
Sources
The rules, dimensions and specifications on this page were read from these documents.
- ITF Rules of Tennis — International Tennis Federation, 2026, Rule 16 — The service; Rule 17 — Serving (read 2026-09-12)
How it connects
The meaning-bearing relationships that place Flat, slice and kick serves in the wider knowledge graph — each one with the reason it exists.
Builds on
Understanding these first makes this one make sense.
Foundation of
These build directly on this one.
Alternative to
Comparable enough that people choose between them.
Frequently learned together
Taught side by side in the same stage of a learning path.
- Topspin ForehandBoth are taught in the “Build your technique” stage of the Tennis learning path.
- One-Handed BackhandBoth are taught in the “Build your technique” stage of the Tennis learning path.
- Tennis ServeBoth are taught in the “Build your technique” stage of the Tennis learning path.
- VolleyBoth are taught in the “Build your technique” stage of the Tennis learning path.
- The return of serveBoth are taught in the “Build your technique” stage of the Tennis learning path.
Explore across the knowledge base
Follow the threads that connect Flat, slice and kick serves to the rest of SocialSportHub.
Rules
- Tennis serving rulesThe rules governing how a tennis point begins, including where the server stands and where the serve must land.
- Direct and indirect free kicksThe two types of free kick awarded in football to restart play after a foul or other stoppage.
- Volleyball rotationThe rule that players rotate one position clockwise each time their team wins back the serve.
- Test, ODI and T20 cricket comparedThe three international formats of cricket side by side — innings structure, over limits and match length — and why almost everything that separates them is a competition rule rather than a Law.
- Three-hit ruleThe volleyball rule that a team may contact the ball at most three times before it must cross the net.
Tactics
- Serve +1 and return +1The two-shot patterns that decide short points — how a serve's direction determines where the reply comes from, and how a returner uses the same idea against the server.
- Serve and volleyAn attacking tennis tactic where the server follows their serve to the net to finish the point with a volley.
- Point constructionHow tennis points are built rather than won — the neutral, attacking and defensive positions, what each one permits, and why most errors come from playing the wrong shot for the position.
- Pick and rollA two-player basketball action where one player screens for the ball-handler, then rolls to the basket.
- Territory versus possessionRugby union's central strategic trade — when to keep the ball and when to kick it away — and why the 22-metre line makes field position worth more than possession in some parts of the field.
Equipment
- What the Rules regulate about a tennis racketThe surprisingly short list of things the ITF fixes about a racket — a flat, uniform stringing pattern and no energy sources — and the two decided cases that settle what players may use.
- Tennis ball types and specificationsThe four ITF ball types and what separates them — mass, size, rebound and deformation — plus the counterintuitive rule that fast balls are for slow courts.
- MouthguardA moulded guard worn over the teeth in contact and combat sports, cushioning the teeth and jaw against impact. Fit is what makes it work.
- Pickleball paddleA solid, flat paddle used to hit the perforated plastic ball in pickleball.
- Golf clubA shafted club with a specialised head used to strike the ball around a golf course.
Learning paths
Scoring systems
- Basketball scoringBasketball is scored by shooting the ball through the hoop, with baskets worth one, two or three points depending on where the shot is taken.
- Extras: byes, leg byes, wides and no-ballsThe runs a fielding side gives away rather than the batting side earning — what separates a bye from a leg bye, why a wide and a no-ball each cost a penalty run, and how each is recorded.
- Tennis scoringTennis is scored in points, games and sets, using the distinctive 15–30–40 point sequence and a win-by-two margin at every level.
- Football (soccer) scoringFootball is scored by goals, with each goal worth one point and the team scoring the most goals winning the match.
- Badminton scoringBadminton uses rally scoring to 21 points per game, with matches decided over the best of three games.
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How this page is maintained
- Content type
- Technique
- Provenance
- Tier A — evergreen educational
- Verified external sources
- 0
- Content updated
- 2026-09-01
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