01By trump held
Made (3–4 tricks)Marched (all 5)Euchred
| Trump held | Lone calls | Made | Marched | Euchred |
|---|---|---|---|---|
| 3 | 61,834 | 97.7% | 31.1% | 2.3% |
| 4 | 46,975 | 100.0% | 46.0% | 0.0% |
| 5 | 7,373 | 100.0% | 94.9% | 0.0% |
With three trump a loner is almost never euchred (2.3%), but it marches only 31% of the time. The fourth trump is what turns a safe point into a likely four: 46% of four-trump loners march.
02Reading the numbers
A lone call that comes up short still scores the single point a partnered call would have, so the real risk is the euchre, not the partial. That is why strong players go alone on hands that are sure of three tricks and have a real chance at five, and why defenders lead the suit most likely to take a trick. The full decision, including the score and your seat, is in the going alone guide.
Source: 200,000 games (2,302,736 hands) simulated on the GrandBower rules engine, with expert bots (tier 4) in all four seats, stick the dealer, games to 10. Seeded run 20261103, generated 2026-11-03. Rates describe hands that were actually called by strong players, not every hand that could have been. Free to cite with a link to GrandBower’s euchre odds (CC BY 4.0).