Your Scoring Transfers, Your Serve Doesn't, and the Wall Is Not Out
Padel rules for tennis players: same scoring, underhand serve, and the one enormous difference — the ball is still live off the glass. What transfers and what must be unlearned.

Tennis players learn padel’s rules in about ten minutes, then spend a month unlearning the instincts the rules quietly contradict. Here is the ruleset through a tennis lens — what carries straight over, and where the game forks.
What transfers untouched
Scoring is tennis scoring: 15-30-40-game, six-game sets, tiebreaks — most competitive padel plays golden point at deuce, a small mercy tennis is only now adopting. Matches are best of three sets. The court has a net, service boxes, and faults. Doubles is the game; padel is played two-a-side essentially everywhere.
The serve: underhand, after a bounce
Padel’s serve must be struck at or below waist height, after bouncing the ball behind the service line. Serve diagonally into the opposite box, one bounce, two attempts like tennis. The result is philosophical: the padel serve starts the point rather than trying to end it. Your flat bomb is gone; in its place are placement, spin, and the serve’s real job — earning the net position behind it.
The walls: the actual sport
The rule that rewires everything: after the ball bounces on your side, it may hit the glass and remain in play. You can let a ball pass you, play it off the back wall, and return it — the instinct to give up on a ball that beats you is the single most expensive tennis habit. The mirrored rule governs offense: hitting the glass on the fly on your opponent’s side is out; the ball must bounce first. And the fences: ball off the cage on the full is out on their side, playable after a bounce on yours.
Smaller print that catches converts
The court is roughly a third smaller than a tennis court, enclosed, with no doubles alleys — the walls are the alleys. You may volley anything except the serve return… which brings the one rule tennis players refuse to believe: you can leave the court through the gate to chase a ball that has bounced and exited — the spectacular “salida” — and play it back in.
The strategic consequence
Because the glass rescues defense, winners are rare and patience is structural: points are won at the net, set up by lobs, and lost by impatience. Tennis rewards ending points; padel rewards continuing them until the other pair cracks. Learn the rules in ten minutes — then let the walls spend a month teaching you what they mean.