How to play big points in tennis

Spot the big point before it's played. Then take less risk on it.

Key facts

1
By Jeff Sackmann's estimate, the average tour break point carries about 10.5 % leverage: winning or losing it swings the match-win probability by roughly ten percentage points.
Jeff Sackmann, "Measuring the Impact of Break Points", Tennis Abstract, 2019
2
The 15–30 point is pivotal and underrated.
Jeff Sackmann, "The Pivotal Point of 15-30", Tennis Abstract, 2015
3
Break points, set points and tiebreak points dominate match outcomes far beyond their share of points played, because of how tennis scoring branches.
4
A 40–0 point moves the match-win probability almost nothing, though the scoreboard shows it the same size as 30–40.

Why it works

Leverage is the swing: how much your chance of winning the match changes if you win this point rather than lose it. It comes straight out of the scoring. A 30–40 point at 5–6 sits on a branch where one outcome ends the set and the other doesn't. The score already tells you which point this is. You don't need to feel it.

What good players do with that knowledge is the surprise. They lower risk. Percentage tennis under pressure means a serve to the body or a proven target, the ball into the bigger part of the court, the attack on the weaker wing, and no low-margin winner.

A rehearsed serve and plus one turns the biggest point into a familiar one, because repetition builds habits that survive nerves. The best servers also keep their targets balanced on big points. A server who always goes to the same spot at 30–40 is readable.

The line to say on court
“The score tells you it's big. The pattern tells you what to do.”

Drill: The big-point board

60 min · with a partner

Before a match, write one serve pattern and one return plan for big points. Two lines, no more.
After every 30–30, 30–40, 40–30, deuce and set point, run your between-point reset before the next ball. Have your partner log the point and whether you played the plan.
After the match, count the big points you played to plan. The score doesn't count here.

Number to beat8 of 10 big points played to plan

More drills like this: mental game

Faults and fixes

Deciding the shot after the return

On the points that matter, you're late and improvising.

FixMake the serve and ball three one decision, before the toss.

Going for the line at 30–40

It's the lowest-margin shot at the highest-leverage moment.

FixServe to the body or a proven target and make them beat you.

Using the same big-point serve every time

Predictable servers are readable.

FixKeep two proven targets and alternate them.

Questions players ask

What are the most important points in tennis?

Break points, set points and tiebreak points, plus 15–30, which is pivotal and underrated. The scoring structure makes them count for far more than their share of points.

Should I go for winners on break point?

No. Take less risk. Serve to the body or a proven target, hit into the bigger part of the court and make your opponent beat you.

What should I serve at 30–40 on a second serve?

A serve you trust, like a body serve followed by the forehand you've drilled. The low-margin serve out wide fails too often.

Is being clutch a real skill in tennis?

It's unsettled. Clutch stats come from small, noisy samples, and it isn't clear whether clutch is a stable trait or just regression to a player's normal level.

What this doesn't cover

Leverage comes from a scoring model, not from your personal numbers. Clutch statistics are small samples and noisy, so read the pattern, not one figure. Whether clutch is a stable trait or just regression to a player's normal level is unsettled.

Sources

Jeff Sackmann, "Measuring the Clutchness of Everything", Tennis Abstract (2016)
Jeff Sackmann, "Measuring the Impact of Break Points", Tennis Abstract (2019)
Jeff Sackmann, "The Pivotal Point of 15-30", Tennis Abstract (2015)
Match Charting Project

Know the gameWhat makes a big point in tennis: win probability and leverageTennis win probability is each player's live chance of winning the match, computed from the score and how often each wins points on serve. Leverage is how much one point moves that chance, and it's what makes a big point. A 30–40 break point at 5–6 in a deciding set carries huge leverage. 40–0 at 3–0 carries almost none.Play the pointWhat is serve plus one in tennis, and how to use itServe plus one means planning your serve and the next shot as one play. On the deuce side, serve wide to pull the returner past the sideline, then hit your forehand into the open court. The serve is the only shot you fully control, so use it to make the reply predictable. Decide the plus one before you toss.MindWhy you choke in tennis and how to fix itYou choke in tennis by one of two opposite routes: you think too hard about a stroke that should run on its own, or worry crowds out the attention a task needs. The fix for one can make the other worse. Your routine is the one tool that counters both, so pair it with a target you name aloud. That's why "just relax" is a coin flip.Play the pointWhat is percentage tennis and how do you play itPercentage tennis means choosing targets and shots so the point ends on your opponent's error more often than on yours. It isn't pushing. It's aggressive with margin: aim through the net window, land past the service line, and go to the bigger half of the court and the weaker wing. About two in three points end on an error.