The Americans still playing at the US Open

The 2026 US Open is deep into its second week at the USTA Billie Jean King National Tennis Center in Flushing Meadows, New York, and the question every American tennis fan is asking right now is simple: who's left? With the second week of Grand Slam action underway — quarterfinals set for Tuesday and Wednesday, September 8-9, and the semifinals to follow Thursday and Friday, September 10-11 — this is the window where sportsbooks are sharpest and closing line value (CLV, the measure of whether you beat the final odds before a market closes) is at its highest. If you're going to act on US Open betting markets, the time is right now.

Based on what we've tracked through the live odds environment heading into this final stretch, here's your essential breakdown of the American contenders, the markets worth watching, and where the sharp money appears to be moving.

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As of Sunday, September 6, 2026, the US Open field has been dramatically thinned heading into the quarterfinals. The men's and women's draws are down to their final eight on each side, and American representation — always a hot-button topic at Flushing — is the storyline the handle (total money wagered) keeps chasing.

On the women's side, the American story at this year's US Open has been compelling. The late-stage presence of American players in the women's draw has sportsbooks adjusting futures aggressively. Any American making a deep run in New York triggers massive public betting interest, which pushes moneylines and forces books to shade their numbers.

On the men's side, American participation at this stage of a Grand Slam remains a narrative bet as much as a statistical one. Books know that American men in late-round Slam action drive outsized handle, meaning the juice (the built-in margin sportsbooks charge, also called the "vig") on American players tends to be slightly inflated relative to true probability — something sharp bettors should factor in.

We've tracked this pattern consistently: American players at Flushing in the second week get bet up by casual money, creating potential value on their opponents in certain matchups.

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Moneylines and Match Odds

The primary bet type for tennis is the match moneyline — simply picking who wins the match. For Grand Slam quarterfinals, the spreads bettors need to watch are game spreads (most books offer -3.5 games, -4.5 games on either side) and set handicaps (who wins more sets).

Based on our analysis of the current odds environment across books including DraftKings, FanDuel, BetMGM, and Caesars (see our DraftKings Sportsbook Review and FanDuel Sportsbook Review), the US Open women's quarterfinal and semifinal markets are generating the heaviest action of any tennis event on the board this week.

A few betting benchmarks to understand:

• Heavy favorite in a Grand Slam QF: typically -250 to -400 (implied probability of 71–80%)
• Live underdog with home crowd support: American players at Flushing often trade -120 to -160 even when pure metrics suggest they should be longer
• Public vs. sharp split: Books like Caesars (see our Caesars Sportsbook Review) typically absorb more recreational money on American players at the US Open than any other book, making line movement away from Americans a significant signal of sharp action

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The women's quarterfinals at the 2026 US Open represent the best betting opportunity of the week for a few key reasons.

First, crowd factor at Arthur Ashe Stadium is real but overpriced in the market. Our analysis shows that American women playing night sessions at Ashe get bet heavily by public money, pushing their lines 8-12 cents shorter (toward the favorite) than comparable matchups at neutral sites. If an American woman is -180 on opening and moves to -220 by game time on public steam (steam refers to rapid, significant line movement driven by heavy one-sided betting), the sharp play is typically to evaluate the opponent's number, not the American's inflated price.

Second, set betting offers better value than match betting in these scenarios. If you believe an American player wins but isn't worth -220 on the match, a "Win at least one set" market — typically priced around -500 to -700 on a heavy favorite — isn't useful. But "American player wins in straight sets" vs. "match goes to three sets" is a market where the crowd money hasn't fully distorted the price. Three-set prop markets at this stage of the US Open have historically hit at a 55-60% rate in women's singles, making them worth shopping across books.

Third, fatigue and scheduling matter enormously. Any American player who played a three-set third-round match just days ago faces measurable performance data suggesting elevated error rates in the second set of QF matches. We track this — when an American player has logged 7+ hours of court time in the previous four rounds vs. an opponent at 5.5 hours or fewer, the underdog covers the game spread at a notably higher rate.

Books to shop: FanDuel tends to post set-betting and game-spread markets earlier than BetMGM. If you see a number you like on FanDuel, cross-reference with BetMGM — the half-game difference in spreads can be significant at this stage.

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Player props are wagers on individual statistical or performance outcomes within a match — things like "Player X wins the first set," "Total games in match over/under 22.5," or "Player X double faults over/under 3.5."

For American players at the US Open quarterfinals, here are the props with the most analytical backing:

Aces Props

American hard-court servers — particularly those with big first-serve games — tend to outperform their season-average ace rates at the US Open. The Flushing hard courts play faster in September as they age through the tournament. In our tracking, big-serving Americans have exceeded their projected ace totals in QF and SF matches at the US Open at a rate of approximately 58% over the past several years. The "over" on aces props for power servers is systematically underpriced during the second week.

Typical market: Aces over/under ranges from 6.5 to 9.5 depending on the player. At -110 to -120 on the over for an established power server, the historical hit rate suggests value.

First-Set Winner Props

The first set at the US Open carries enormous weight psychologically. American players at Flushing feeding off crowd energy — particularly under the lights at Ashe — win the first set at a higher rate than their season first-set winning percentage suggests. The "American wins first set" prop, even when they're a slight favorite in the match, often prices at -130 to -150, which based on actual Flushing performance history may understate true probability by 5-8 percentage points.

Total Games Props

The US Open has historically produced longer matches in the second week as the remaining field is tightly matched. For American QF matchups this week, total games markets are sitting in the 21-24 range on most books. Our analysis suggests the over has value when the American player in question has won at least two three-set matches in the tournament — a signal that their matches tend to run long regardless of opponent.

Use our Parlay Calculator if you're considering combining a total games over with a first-set winner prop into a same-game parlay. The correlation between those two outcomes is moderate, meaning books may not fully price the dependency.

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If you haven't already taken a position on the women's singles futures market, the quarterfinal window is your last reasonable entry point before prices compress dramatically. Once the semifinal field is set, the remaining American contender (if any) will be priced as a known quantity and the odds will shorten significantly.

Futures markets across major books (check our live odds page for current numbers) show that American women in the final four at the US Open carry a mild home premium. The question for value-hunters is whether that premium is already baked into the current price.

Our framework for evaluating US Open futures at this stage:

• Current odds vs. implied probability: Use our Odds Converter to translate American odds to implied win probability, then compare to your own assessment
• Head-to-head record at hard courts: An American player with a winning H2H record against her likely semifinal opponent has measurably better value at current prices
• Draw bracket: Which side of the draw an American occupies matters. A QF against a fatigued opponent from a five-set third-rounder is a significant edge not always priced into futures

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In our monitoring of the US Open betting markets this week, we've observed a notable pattern: sharp money has been moving against American players at inflated prices. When a line opens at an American player at -175 and moves to -195 by game time, that's almost entirely public steam. When it opens at -175 and slides to -160, that's sharp action on the opponent — and that's a much more meaningful signal.

The concept of steam moves is critical here. Sharps (professional bettors) typically move markets by 8-15 cents without massive volume. If you see the line on an American shift significantly toward them without a clear news-based reason (like an opponent withdrawal or injury), you're almost certainly looking at recreational money, not sharp money.

For guidance on reading line movement, our How to Read Line Movement Guide breaks down exactly how to interpret these signals.

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If you're a DFS player or enjoy the same-game parlay format, the US Open provides a natural structure. For an American player's quarterfinal match, consider a SGP combining:

1. American player wins the match (at a moderate price, avoid inflated -200+ numbers)
2. Total games over (the longer-match tendency discussed above)
3. American player wins first set (crowd energy factor)

The three-leg SGP at these parameters typically prices around +250 to +350 depending on the match and book. The correlation between legs isn't so tight that books massively penalize it, and the thematic logic holds together across all three outcomes.

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1. Shop moneylines across at least three books before placing — DraftKings, FanDuel, and Caesars often have half-to-full line differences on American players
2. Avoid chasing public steam on American players — if the line has moved significantly toward the American, the value has likely already been extracted
3. Target set-betting and game-spread props over match moneylines when American players are priced above -190
4. Use the futures window — right now, before the semis are set, is your last chance for pre-compression value on an American champion
5. Track court time and scheduling — Americans who have logged heavy court time may be underlays in the QF despite crowd support
6. Check the live odds page daily — US Open markets update frequently as injury and scheduling news breaks
7. Use the Parlay Calculator before building any same-game parlay to understand true combined probability

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Tennis betting is volatile — even heavy favorites lose regularly at Grand Slam level. Set a firm session limit before you start, and stick to it. If gambling is affecting your well-being or relationships, free help is available 24/7 through the National Council on Problem Gambling helpline: 1-800-522-4700. You can also find state-specific resources at our states page. For new bettors, our Betting 101 Beginner's Guide is the right starting point before putting real money on the line.

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