The Tennis Court Explained: Lines, Dimensions, and Every Part Named
Baseline, service box, tramlines, the T, the no-mans-land you keep getting caught in. Every line and zone on a tennis court, what it is for, the real dimensions, and why knowing the court makes you a smarter player.
By Two brothers in Melbourne, co-founder of RallyHub.
A tennis court can look like a confusing grid of lines the first time you stand on one, but every single line has a job, and knowing what each part is for makes you a smarter player straight away. You start positioning yourself properly, you stop getting stranded in the worst spot on the court, and you finally understand why people shout about tramlines. Deuce is back in his umpire's kit to give you the full tour.
The dimensions, for the record
A tennis court is 23.77 metres long (78 feet) from baseline to baseline. It is 8.23 metres wide (27 feet) for singles, and 10.97 metres wide (36 feet) for doubles, the extra width coming from the tramlines down each side. The net is 0.914 metres (3 feet) high at the centre and a touch higher at the posts. Those are the same dimensions whether you are at a public park or Rod Laver Arena.
The baseline
The line at each far end. You serve from behind it, and most rallies are played from on or behind it. The short mark in the middle of the baseline is the centre mark, which divides the two service halves and tells you which side to serve from.
The service boxes and the T
The two boxes nearest the net on each side, formed by the service line (running across the court halfway between the net and baseline) and the centre service line (running down the middle). Your serve must land in the box diagonally opposite. Where the centre service line meets the service line is the T, the spot servers love to aim at and a key reference point for where to recover to.
The tramlines (doubles alleys)
The narrow lanes down each side, between the singles sideline and the doubles sideline. They are in play only for doubles. In singles, a ball landing in the tramlines is out. This single distinction trips up more beginners than anything else, so it is worth burning in. Our beginner rules guide covers how they change the in-or-out call.
No-mans-land
The strip between the service line and the baseline. There is no line marking it off, but every coach warns you about it, because it is the worst place to get caught standing. Balls land at your feet there, awkward to play and easy to be passed from. The rule of thumb: be either behind the baseline rallying, or up at the net volleying, and move through no-mans-land quickly rather than parking in it. Knowing this one zone instantly improves your positioning.
Why this makes you a better player
Once you can name the parts of the court, tactics start to make sense. "Recover to the centre" means back behind the baseline near the centre mark. "Aim for the T" is a serve target. "Get out of no-mans-land" is the fix for half your awkward shots. The court stops being a blank grid and becomes a map you can play off, which feeds straight into singles and doubles tactics.
Find a court to stand on
Knowing the court is one thing, getting on one is another. If you are after somewhere to play, our city guides to the best Melbourne, Sydney, and Brisbane public courts list the free and paid options. And if your club runs its courts through RallyHub, you can see which surfaces are available before you head down. Deuce, hat tipped, sends you off court-literate. Next, learn the calls that happen on those lines with tennis rules for beginners.