Cue ball hits same long rail two times in sequence. Useful when object balls force the cue ball into a "back-and-forth" along one rail.
Reference route
Reproducible table setup
A measurable starting point for this route family. The line is a practice reference, not a guaranteed scoring path.
Normalized ball coordinates
| x/L | y/W | |
|---|---|---|
| White cue ball | 0.194 | 0.500 |
| Yellow ball | 0.229 | 0.570 |
| Red ball | 0.880 | 0.500 |
Two controlled variations
- A · Change only side spin; keep the setup and pace.
- B · Change only pace; keep the setup and contact point.
Arrival tolerance target: ±30 mm
Practice protocol: 4 sets × 6 repetitions
Calculation record: Physics 3.0.0-beta · Solver 4.2.0
Physics V3 remains measurement-pending; verify the line on your own cloth and cushions.
Open this exact setup in 3ball →Double-Rail Position — Setup
Object balls force cue ball to bounce twice along same long axis.
Stroke and english
Firm pace (two cushion absorptions). 1 tip running english.
When to use it
Object ball geometry creates back-and-forth necessity along one rail.
Common mistakes
Pace too soft for double-cushion travel. English direction wrong = wrong second-bounce angle.
Practice notes
There is no universal hit rate for this position. Repeat it under the same table conditions and compare your own accuracy, route and speed consistency over time.
Pro players who use it
No player-specific usage claim is made without a position-level match sample. Treat this as a geometry and practice pattern, not as an attributed signature shot.
Practise this position
Open it directly in 3ball — adjust ball positions, stroke, and english to match your real-table setup.
Open in 3ball →Related positions: