Two men’s semi-finals today, so the slips stay short. Day 12 was a split: both named bets landed, Jessica Pegula and Coco Gauff were beaten and the Favourites Slip came in, but the Value Slip needed both underdogs to take a set and Pegula never did, and the Straight Sets Slip went when Elena Rybakina dropped the opener against Gauff. 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 13 predictions and order of play.
Acca 1 — The Favourites Slip (2-fold)
Both of our named winners. Alexander Zverev leads the head-to-head 6-3 against Karen Khachanov, has won three of the last four, and beat him for Olympic gold in 2021. Ben Shelton leads Frances Tiafoe 3-1, has won both of their hard-court meetings, and arrives having beaten Carlos Alcaraz over five sets.
| Leg | Selection | Approx odds |
| 1 | Alexander Zverev to beat Karen Khachanov | Odds-on |
| 2 | Ben Shelton to beat Frances Tiafoe | Around evens |
Place this bet with: Back this acca with Bet365
Acca 2 — The Value Slip (2-fold)
Rather than pick against our own two, this backs both underdogs to make a contest of it. Karen Khachanov has won 15 sets and lost 3 this fortnight, the cleanest return of anyone left, and he has beaten Zverev twice at the Canadian Open. Frances Tiafoe has already come from two sets down once this week and beat Daniil Medvedev without dropping a set in the fourth round.
| Leg | Selection | Approx odds |
| 1 | Karen Khachanov to win at least one set | Odds-on |
| 2 | Frances Tiafoe to win at least one set | Odds-on |
Place this bet with: Back this acca with Sky Bet
Acca 3 — The Straight Sets Slip (2-fold)
The long shot, and it has returned once all fortnight. Both of our picks have the serve to end a semi-final quickly, but neither has been tidy: Zverev needed five sets twice in the first week and Shelton has dropped five sets in five matches, more than anyone else left in the draw.
| Leg | Selection | Approx odds |
| 1 | Alexander Zverev to win 3-0 | Around 2/1 |
| 2 | Ben Shelton to win 3-0 | Around 5/2 |
Place this bet with: Back this acca with Paddy Power
Day 13 Acca Summary
Three two-fold slips off two semi-finals: the favourites, the underdogs to take a set, and the straight-sets ticket. The Favourites Slip is the one we would stand behind, and the same two selections are our named best bets in the Day 13 predictions and order of play.
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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 · Day 10 · Day 11 · Day 12 · Day 13
Daily acca tips: Day 2 · Day 3 · Day 4 · Day 5 · Day 6 · Day 7 · Day 8 · Day 9 · Day 10 · Day 11 · Day 12 · Day 13
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.