Tennis markets: retirement, walkover and who advances

How the captured ITF contract resolves retirement, walkover and unplayed matches, with a worked 100-share case showing that 50-50 is not a refund.

In this guide

What the captured contract actually says

The rule snapshot retrieved on 10 October 2026 covers the ITF Women Irvine match between Veronica Miroshnichenko and Lani Chang, originally scheduled for 17 June 2026 at 2:00PM ET. It answers 1 question: which player advances. It does not settle on who wins a set or how many games are played. Treat the dates as a historical snapshot, not as a live opportunity.

The contract distinguishes a walkover or unplayed cancellation from retirement after play has begun. A walkover or canceled unplayed match resolves 50-50. A match delayed beyond 7 days from the scheduled date without a determined winner also resolves 50-50. After play begins, if a player advances because the opponent retires, defaults or is disqualified, the market resolves to the player who advances.

The primary resolution source named in the contract is official information from the International Tennis Federation (ITF), with a consensus of credible reporting as a fallback. The title alone is not enough to know how an abandoned match is treated. Prediction markets with ordinary binary outcomes pay 1 to the winning side and 0 to the losing side; a 50-50 resolution is a distinct outcome that pays .50 per share to each side and is not a refund of the price paid. Different markets can carry different deadlines and sources, so verify the actual rules before assuming a general treatment of tennis cancellations.

Worked decision: 100 shares at .40 with costs of 2

Suppose, hypothetically, you bought 100 shares at .40. Shares cost .40 each, so 100 shares cost 40. Adding an assumed fixed cost of 2 brings the total outlay to 42. This is an illustrative calculation, not a record of a trade or a price observed at any time.

If the match is a pre-play walkover, a canceled unplayed match, or delayed beyond 7 days with no winner determined, this contract resolves 50-50. Each share pays .50, so the 100-share position returns 50. Net of the 42 total cost that is a gain of 8. If the match begins and your player loses, or if your player is the one who retires, the shares pay 0, for a net loss of 42. The 50-50 branch is not a refund of the .40 entry price; it is a payout of .50 per share, which happens to be higher than .40 in this illustrative case.

Case table

The table below lays out the 2 outcomes for a hypothetical position of 100 shares bought at .40 with assumed fixed costs of 2. The settlement branches follow the captured contract. The share count, purchase price and fixed cost are illustrative assumptions.

Illustrative case: 100 shares at .40, assumed fixed costs of 2, based on the captured ITF contract terms.
ScenarioPayout per shareGross payoutTotal costNet result
50-50 resolution (pre-play walkover, canceled unplayed match, or delay beyond 7 days without a determined winner)0.505042+8
Losing side (match played or opponent advances)0042-42

Limits of this reading

This is a contract snapshot retrieved on 10 October 2026, and some dates inside it are already in the past. It is a documented historical rule example, not a statement about current tradability, price or outcome. Nothing here should be turned into a suggestion that the same clauses govern every tennis market or every exchange. Another event can use a different deadline, a different resolution source, or a different treatment of an abandoned match; the rules of the specific market are what matter.

The 8 gain and 42 loss are arithmetic under the stated assumptions, not empirical findings. The assumed fixed cost of 2 is invented for the case; real costs, spreads and liquidity differ by venue and time. No winner, price or performance is claimed, and the 50-50 branch should not be read as a universal cancellation policy.

What to check before you commit

Identify which branch your money is exposed to. If you hold a position before play starts, walkover and cancellation risk sit in the 50-50 branch, and you should compare the .50 payout against what you paid rather than assume you get your entry price back. If you are still holding after play begins, the player who advances is the one who pays, even if the advance comes from a retirement, default or disqualification. More general market mechanics are covered in the resolution guide and you can test positions in the calculator tool, while broader sports coverage sits in the sports section.

Sources & verification

Polymarket: Resolution ↗

Sources checked

PolyZeno. Automated review with DeepSeek V4.1 Flash.