108 Checkout in Darts — T20 → 16 → D16
At 108, the leg is decided by the quality of the opening throw more than any other single factor. The route — T20 → 16 → D16 — is built to convert that first dart into a clear path to D16. Players who finish 108 reliably treat the opening triple as the highest-consequence dart in the visit, not the double — because the double becomes straightforward when the approach is controlled, and becomes genuinely hard when it is not.
Miss direction on the opening dart matters specifically on 108 because the preferred and non-preferred outcomes diverge significantly. The 5 side leaves 103. The 1 side leaves 107. That difference — between a strong recovery position and a weak one — is the reason miss geometry is taught as an active skill rather than a passive observation. Applying it means building a slight lean toward 5 into the throw preparation, not changing the aim, but shaping the release so that a drift lands where you have already decided it should.
In match conditions, the biggest risk on 108 is not a technically poor dart — it is a dart thrown to the result rather than to the target. The player who is thinking about what the score will be after the throw, or whether the close is going to be available, or what the opponent is on, has already moved away from the execution mindset that finishes legs. The route T20 → 16 → D16 is decided. The target is decided. The only remaining decision is to commit fully to T20 and let the visit run according to the structure.
Pressure does not change what the dart needs to do. It only changes how the player feels about throwing it — and the throw should be identical to every other dart in the leg. Tight grip and a rushed release are the most common mechanical breakdowns under pressure on 108. Neither is an aim problem. Once the arm starts forward, commit fully. Adjusting mid-throw is the most reliable way to produce the miss that was being avoided. The pressure side of darts is not separate from the technical side. They are the same challenge. A well-rehearsed routine handles both simultaneously. High-range finishes like 108 expose impatience faster than any other finish structure. The players who drop these scores are almost always players who stopped trusting the route mid-visit.
Against pressure, T20 and D16 are exactly what is needed — aggressive scoring and a reliable close. The route structure does not need adjustment for match context.
Route Comparison & Target Selection
Primary: T20 → 16 → D16
treble 20 (60), single 16, closing on double 16 — high-percentage close
Alternate: T20 → 8 → D20
treble 20 (60), single 8, closing on double 20 — high-percentage close
The primary (T20 → 16 → D16) and alternate (T20 → 8 → D20) close on comparable doubles — D16 and D20 respectively — and both offer a valid path to the finish from 108. The miss geometry on T20 is asymmetric — the 5 side leaves 103 and the 1 side leaves 107, so the preferred drift direction is toward 5. The distinction is in the approach. The primary is the standard route and should be used as the default. The alternate is the contingency for visits when the primary's sequence is not producing clean grouping — same close quality, different path, equally valid when the specific approach is working better.
Bias the throw away from 1 on 108. That miss leaves 107 vs the more manageable 103 from 5.
Miss Geometry, Route Structure & When to Use the Alternate
No high-value triple has worse neighbours than treble 20. The 5 sits to its left and the 1 to its right — the two lowest singles on the board. From 108, drifting into 5 produces 103 remaining and drifting into 1 produces 107. The primary route opens here because the score structure demands it, but the miss geometry should inform how you approach the throw. A slight drift in either direction from 108 lands in a segment that scores between three and five times less than the treble itself. Treble 19, by contrast, is flanked by 3 and 7 — both higher-value, both more often leaving a route that can still close cleanly. The drift trigger for switching to 19 exists precisely because of this asymmetry: when grouping moves consistently below the treble 20 bed, the geometry of 19 becomes structurally correct regardless of its lower maximum value. Looking at how the route is built, three darts are required here because 108 resists any clean two-dart path. The sequence runs T20 to open, 16 to position, and D16 to close — each dart serving a specific function in the structure. The risk that the three-dart sequence introduces is rushing: players who hit T20 cleanly sometimes accelerate through 16 and arrive at D16 from a weaker position than necessary. Slowing the decision-making between darts — giving each throw its own committed setup before the release — is what keeps three-dart routes running cleanly under pressure. Regarding the choice of route, both routes close the leg from 108 through comparable finishing doubles — the primary on D16 and the alternate (T20 → 8 → D20) on D20. The difference is the approach: T20 versus T20 on the opening dart, and different bridging sequences to reach the close. Switch to the alternate when the primary's approach is not finding the right grouping, and treat it as an equally valid line rather than a compromise.
When and Why to Use This Route
This is the correct route regardless of the score in the match. T20 puts pressure on the opponent while D16 gives the best possible finish. A player who uses this route consistently from this score will close more legs than one who looks for alternatives based on match state.
This approach is effective because the two components reinforce each other rather than trading off against one another. T20 creates scoring momentum and leaves the finish within reach. D16 converts it without demanding perfect execution at the close. The player who uses this route aggressively and commits to both darts will close more legs from this score than any alternative route provides.
Why Players Miss This Finish
Players miss the 108 checkout by losing control of the visit on the second dart, not the first. T20 lands well and the position looks good — then, instead of committing fully to 16, the player is already thinking about D16. The second dart becomes distracted: aimed partly at 16 and partly at the result it will produce. That distraction costs accuracy. The dart lands somewhere other than intended, and the close on D16 is either harder than it should be or no longer available. Players who drop 108 regularly from a clean T20 are almost always losing the leg on dart two, not dart three.
Players who close 108 most reliably have solved the same problem: they have made the response to an imperfect dart automatic. When T20 lands slightly off, the right response is to read the new score immediately and throw the best available continuation without hesitation. That response is not instinctive — it is trained. Practising the recovery from the two most likely miss positions on T20 is the most direct way to reduce the number of legs dropped from a recoverable position on 108.
Practice
Practise the 108 checkout as a complete sequence — T20 → 16 → D16 — rather than drilling each dart in isolation. The rhythm between darts is as important as the accuracy of each individual throw. Players who practise T20 separately, then 16 separately, then D16 separately, and then combine them in a match often find the transition between darts is the problem, not the darts themselves. Run the full route in sets: three successful completions before stopping, or a conversion rate target like two clean legs in five attempts.
Recovery practice is not supplementary to 108 training — it is essential to it. The two most likely recovery positions from a miss on T20 are 103 (via 5) and 107 (via 1). Practising both of these scores alongside the full 108 route produces a player who can continue the visit without recalculation after an imperfect first dart. That continuation speed — the automatic response to a slight drift — is one of the most valuable and least-practised skills in club-level 501.
