Day 4 is the fullest card of the fortnight: the first round finishes and the second round starts, 46 matches across the site. Three slips below. Full match previews, individual best bets and the complete order of play are in our US Open Day 4 predictions article. Tuesday’s rain left all three of our Day 3 slips still alive, waiting on Alex de Minaur, Daria Kasatkina and Jan Choinski, all of whom play today.
Acca 1 — The Seeds Slip (4-fold)
Four second-round matches where the gap is wide. Carlos Alcaraz closes the Ashe night session against Jaime Faria, a qualifier ranked outside the top 100. Aryna Sabalenka opens it against Polina Iatcenko, also a qualifier. Daniil Medvedev plays the American wild card Sebastian Gorzny, and Andrey Rublev faces Daniel Merida having already survived a five-setter from two sets down. None of the four should need to be at their best.
| Leg | Selection | Approx odds |
| 1 | Carlos Alcaraz to beat Jaime Faria | 1/14 |
| 2 | Aryna Sabalenka to beat Polina Iatcenko | 1/16 |
| 3 | Daniil Medvedev to beat Sebastian Gorzny | 1/8 |
| 4 | Andrey Rublev to beat Daniel Merida | 1/6 |
Combined: approximately 1/2. Back this acca with Bet365.
Acca 2 — Straight Sets Sweep (3-fold)
The step up. Carlos Alcaraz and Aryna Sabalenka are both facing qualifiers and both have reason to keep the match short with a long fortnight ahead. Linda Nosková, the sixth seed and reigning Wimbledon champion, plays Lanlana Tararudee in the Armstrong night session and has the cleanest first strike of the three. The risk is the usual one: a single tie-break dropped anywhere and the slip is gone, and night-session matches are where that tends to happen.
| Leg | Selection | Approx odds |
| 1 | Carlos Alcaraz to win 3–0 | 4/11 |
| 2 | Aryna Sabalenka to win 2–0 | 1/3 |
| 3 | Linda Nosková to win 2–0 | 8/13 |
Combined: approximately 5/2. Back this acca with Sky Bet.
Acca 3 — The British Slip (3-fold)
Five Britons play today and this is the optimistic reading of three of them. Katie Boulter against Karolína Muchová is the hardest of the three by some way, so she is here to take a set rather than the match. Jan Choinski completes his rain-delayed first round against Botic van de Zandschulp, who has beaten far better players than this on his day but has been inconsistent all summer. And Jacob Fearnley, who came from two sets to one down to win in four hours and 11 minutes on Monday, meets 27th seed Tomás Martín Etcheverry with the harder yards already behind him.
| Leg | Selection | Approx odds |
| 1 | Katie Boulter to win a set v Muchová | 8/13 |
| 2 | Jan Choinski to beat Botic van de Zandschulp | 7/4 |
| 3 | Jacob Fearnley to beat Tomás Martín Etcheverry | 9/4 |
Combined: approximately 12/1. Back this acca with Paddy Power.
Day 4 Acca Summary
- Acca 1 (safest): Alcaraz + Sabalenka + Medvedev + Rublev to win, around 1/2.
- Acca 2 (value): Alcaraz + Sabalenka + Nosková in straight sets, around 5/2.
- Acca 3 (long-shot): Boulter set + Choinski + Fearnley, around 12/1.
Best bookmakers for US Open accas
Compare welcome offers and acca boosts from our recommended bookmakers before placing your slips:
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
- How to watch US Open 2026
Daily predictions & order of play: Day 2 · Day 3 · Day 4
Daily acca tips: Day 2 · Day 3 · Day 4
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.