How do you work out your average in a scoring drill?

Add up every point and divide by the darts thrown, then multiply by three. A dart that lands in the 5 while you aim at the treble 20 still scored 5, so it counts. Over a hundred darts the sum is divided by 100, not by 102, because the last visit is one dart.

What are marks in the 100 darts drill?

A single in the 20 bed is one mark, a double two and a treble three. Anything off the 20 is none. A hundred darts can make at most 300 marks, and one well-known rule of thumb puts a good A-grade player at about a hundred marks from a hundred darts.

Should I practise on the 19 instead of the 20?

Only if your darts at the 20 keep drifting one way and your sessions at the 19 score better. Play a few sessions at each. The drill keeps the miss pattern for the 20, and the Practice area compares your averages at each bed once there are thirty darts behind them.

The scoring drill

What is the 100 darts drill?

You throw a hundred darts at the treble 20 and add up everything they score. A dart in the 5 counts 5 and a dart in the 1 counts 1. Divide the total by 100 and multiply by three, and that is your 3-dart average for the session, the same number your 501 average is measured in.

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Target

Another

Every dart goes at the treble 20. Whatever it hits still scores.

Length

PracticeKept out of your match figures, and kept in your Practice area.

T20, 0 of 10 visits

3-dart average

0.0

0 points from 0 darts

Treble rate

–

0 of 0

Marks

out of 0

Best visit

–

0 of 100+

Every dart at T20. A dart off the 20 still scores.

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Getting the board ready

One treble for the whole session and nothing else to think about. There is no checkout at the end dragging the number down, which makes this the cleanest measure of your scoring you will get. Choose the treble and the length, then enter each dart as it lands or the three-dart total if that is quicker. It is saved on this device as you go, with no account.

What each dart counts for

Every dart scores its value. The drill also sorts it against the bed you chose, which is where the marks and the treble rate come from.

On target: The treble of your number, three marks. On a bull session the bullseye is on target, and the 25 around it is in the bed.
In the bed: Any other part of the same number. A single is one mark, a double two. The board tap can tell an inner single from an outer one, which says whether you fell short of the treble or went past it.
Off the bed: Any other number, either bull or off the board. It still scores what it hit and it makes no marks. These are the darts the miss pattern is built from.

Short sessions peak higher, so your best average is kept separately for each length and each treble. Averages still read across, so a 60 over ten visits and a 60 over a hundred darts mean the same scoring.

What the numbers say

At the end the drill tells you where the darts that missed the treble landed: how many went in the 5, how many in the 1, and whether they lean one way. The drill set that target, so this is kept apart from the targets you call yourself in a match. It only says which way you lean once thirty darts have gone at the target. Anything less is too few to tell a habit from a bad night.

Questions

How do you work out your average in a scoring drill?: Add up every point and divide by the darts thrown, then multiply by three. A dart that lands in the 5 while you aim at the treble 20 still scored 5, so it counts. Over a hundred darts the sum is divided by 100, not by 102, because the last visit is one dart.
What are marks in the 100 darts drill?: A single in the 20 bed is one mark, a double two and a treble three. Anything off the 20 is none. A hundred darts can make at most 300 marks, and one well-known rule of thumb puts a good A-grade player at about a hundred marks from a hundred darts.
Should I practise on the 19 instead of the 20?: Only if your darts at the 20 keep drifting one way and your sessions at the 19 score better. Play a few sessions at each. The drill keeps the miss pattern for the 20, and the Practice area compares your averages at each bed once there are thirty darts behind them.