Darts 501: From Checkout to 9-Darter

501 Double Out is the ultimate test of pure precision and mental calculation. It's the official format of PDC World Championships.

The Ultimate Achievement: The "9-Darter"

In golf, there's the "hole in one". In bowling, the perfect 300. In darts, the ultimate feat is called the 9-Darter. It's the minimum number of darts needed to go from 501 to 0.

It's extremely rare. Even the world's best players can go months without achieving one during a televised event.

The Classic Combination

The "royal" path, most attempted by pros:

First volley : 180 (3 × T20) → Remaining 321

Second volley : 180 (3 × T20) → Remaining 141

Third volley (The Checkout) : T20 (60) + T19 (57) + D12 (24) = 141 ✓

The 9 Perfect Darts

First volley
T20
T20
T20
= 180
Remaining: 321
Second volley
T20
T20
T20
= 180
Remaining: 141
Third volley (The Checkout)
T20
T19
D12
= 141
✓ 0
Total : 9 Darts = 501 🎯

The perfect conclusion of a 9-darter: T20, T19 and D12.

The Art of the Checkout: Finishing in Style

The "Checkout" is the last volley that allows you to reach exactly 0, necessarily finishing with a double. This is where pressure is at its maximum.

The "Big Fish" (170)

It's the highest possible checkout and the most spectacular. It requires two triple 20s and a Bullseye (red center). Achieving a "170 finish" is a memorable moment.

The "Big Fish": 170 Checkout

The highest possible checkout

T20
60
+
T20
60
+
Bull
50
=
170

Top Checkouts

170
T20 T20 Bull
167
T20 T19 Bull
164
T20 T18 Bull
161
T20 T17 Bull
160
T20 T20 D20
158
T20 T20 D19
157
T20 T19 D20
156
T20 T20 D18

The "Big Fish": the supreme 170-point checkout, achieved with T20, T20 and Bull.

The "Bogey Numbers"

These are scores that are impossible to finish in 3 darts.

Impossible scores : 169, 168, 166, 165, 163, 162, 159

A player who finds themselves on one of these numbers knows they'll have to give their opponent a chance.

Key 501 Statistics

In the professional world, every dart thrown is analyzed.

Match Statistics (example)

Player Average Checkout % 180s Best checkout
M. van Gerwen 105.2 47% 8 156
L. Humphries 98.7 42% 5 132
Average = Average score per volley | Checkout % = Success rate on doubles

Example of a statistics board during a televised match.

Statistic Description Pro Level
3-Dart Average Average score per volley 90-100+
Checkout Percentage Success rate on doubles > 40%
Number of 180s Perfect volleys (3 × Triple 20) -

Conclusion

501 is much more than a simple subtraction game. It's a discipline that combines surgical precision, ultra-fast mental calculation and stress management. Every game is a new opportunity to defy statistics.

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