Betting Tips
The fourth round finishes on Day 9 with eight ties, and the women’s card is the reason to be interested: four of the eight women playing have not lost a set all fortnight. Three slips below.
Day 8 was a write-off on the slips. All three lost, though the Seeds Slip broke on the one leg it told you to drop: Daniil Medvedev lost to Frances Tiafoe in a night session, which is exactly the risk that slip flagged. The named bets went two from three. Odds are approximate at the time of writing and we quote a number only where we can stand behind it. Today’s full card and best bets are in our US Open 2026 Day 9 predictions and order of play.
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Acca 1 — The Seeds Slip (4-fold)
Four women who have not dropped a set between them in twelve matches. Mirra Andreeva has conceded 14 games in three matches, the cleanest run of anyone left in either draw. Elena Rybakina has conceded 20, Iga Świątek 22 and Coco Gauff 24.
| Leg | Selection | Approx odds |
| 1 | Mirra Andreeva to beat Anastasia Potapova | Odds-on |
| 2 | Elena Rybakina to beat Naomi Osaka | Odds-on |
| 3 | Iga Świątek to beat Zheng Qinwen | Odds-on |
| 4 | Coco Gauff to beat Iva Jovic | Odds-on |
If you want to shorten it, drop the Rybakina leg. Naomi Osaka is a two-time champion on this court and the only opponent in the four with a major of her own.
Place this bet with: Back this acca with Betway
Acca 2 — The Value Slip (3-fold)
Three men’s ties where the court time tells a different story to the seeding. Karen Khachanov is unseeded and has dropped fewer games than any man left. Botic van de Zandschulp has dropped two sets to Arthur Géa’s five. Alexander Blockx has dropped 34 games to Francisco Cerúndolo‘s 58, and Cerúndolo has just come through five sets against Taylor Fritz.
| Leg | Selection | Approx odds |
| 1 | Karen Khachanov to beat Learner Tien | Around evens |
| 2 | Botic van de Zandschulp to beat Arthur Géa | Odds-on |
| 3 | Alexander Blockx to beat Francisco Cerúndolo | Odds-against |
Small stake as always. The Blockx leg is the one carrying the risk: Cerúndolo is the higher seed and the more experienced player, and coming from two sets down to beat Fritz is the kind of win that carries a player further than the numbers suggest.
Place this bet with: Back this acca with Betfred
Acca 3 — The Straight Sets Slip (3-fold)
Three players who have not lost a set all tournament, asked to keep it that way once more. This slip has lost four days running, every time on one leg, so treat it as the lottery ticket of the three.
| Leg | Selection | Approx odds |
| 1 | Mirra Andreeva to win 2–0 | Odds-on |
| 2 | Iga Świątek to win 2–0 | Around evens |
| 3 | Coco Gauff to win 2–0 | Around evens |
Iga Świątek is the leg to watch. She has not lost a set, but her third round went to two tie-breaks against 25th seed Marie Bouzková, and Zheng Qinwen has won three three-setters to get here.
Place this bet with: Back this acca with Sky Bet
Day 9 Acca Summary
| Slip | Legs | Shape |
| Acca 1 (safest) | 4 | Four women yet to lose a set |
| Acca 2 (value) | 3 | Men’s ties where court time beats seeding |
| Acca 3 (straight sets) | 3 | Three clean sheets asked to hold |
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More US Open 2026 Coverage
All of our US Open 2026 coverage in one place: daily previews, accas and the essentials:
- US Open 2026 hub
- US Open 2026 preview
- US Open 2026 outright betting tips
- US Open 2026 predictions
- US Open 2026 qualifying
- US Open 2026 men’s draw predictor
- US Open 2026 women’s draw predictor
- US Open 2026 prize money
- US Open winners: every champion
- US Open final: dates and how to watch
- How to watch US Open 2026
- Feature: the Big Three streak ends
- Feature: Arthur Fery’s rise
Daily predictions & order of play: Day 2 · Day 3 · Day 4 · Day 5 · Day 6 · Day 7 · Day 8 · Day 9
Daily acca tips: Day 2 · Day 3 · Day 4 · Day 5 · Day 6 · Day 7 · Day 8 · Day 9
18+ | New customers only | Please Gamble Responsibly | Full T&Cs apply | BeGambleAware.org. Odds are approximate at the time of writing and subject to change.