Reader Betting Snapshot
Game: Zsombor Piros vs. Christopher O’Connell
Date: August 28, 2026
Tournament: US Open Men’s Singles Qualifying – Round 3
Venue: USTA Billie Jean King National Tennis Center, New York
Best Bet: Under 22.5 Games
Current Odds: Around -115 at the time of review
Confidence: ★★★★☆
Risk Level: Moderate
Potential Profit on $100: $86.96
Best Time to Bet: Near match time, provided the total remains 22.5
The official US Open draw lists Piros, the No. 12 seed, against No. 17 seed O’Connell on Court 10 in the final qualifying round.
The Market Is Telling Bettors Something
This matchup is more interesting than a standard favorite-versus-underdog qualifier.
O’Connell is the market favorite, with current U.S. prices around -160 to -162, while Piros is available around +132 to +134 depending on the sportsbook. DraftKings also has the total at 22.5 games, with the Over around -125 and Under around -115.
That creates an important distinction.
The market is clearly leaning toward O’Connell, but the moneyline has already absorbed much of that advantage. The total is therefore the more interesting place to look for value.
Recent Form Favors a More Efficient Match
Both players have handled the first two qualifying rounds.
Piros opened with a 6-2, 6-1 win over Max Alcala Gurri before beating Denis Glinka 6-3, 5-7, 6-4. O’Connell has been even cleaner, beating Stefanos Sakellaridis 6-3, 6-3 and Nicolai Budkov Kjaer 7-5, 6-4.
The difference matters.
O’Connell has reached the final qualifying round without playing a third set. Piros needed three sets in his second-round match.
That doesn’t automatically mean Piros is fatigued, but it does give O’Connell a small efficiency advantage entering the final.
Why the Under 22.5 Has Appeal
The Under is not dependent on predicting a dominant O’Connell performance.
That is the key.
A straight-set result such as 6-4, 6-3 produces 19 games. A 6-4, 7-5 result produces 22. Either gets home under the 22.5 threshold.
The danger is obvious: a three-set match almost certainly creates problems for this number.
That is why this is not a maximum-confidence wager.
Hidden Betting Edge: The Qualifying Context
Casual bettors often treat a qualifying final like an ordinary ATP match.
It isn’t.
Both players are trying to reach the US Open main draw, and that can create a more conservative tactical approach early in matches. The player who gets ahead can place additional pressure on the opponent because there is no tomorrow in this qualifying spot.
O’Connell also arrives with two straight-set wins in qualifying, while Piros has already had to manage a three-set match.
That combination makes an O’Connell-controlled match script more plausible than the market’s price on the moneyline alone might suggest.
What Could Go Wrong?
The biggest danger is a competitive three-set match.
Piros has already demonstrated that he can survive a difficult hard-court battle, and his 6-3, 5-7, 6-4 win over Glinka shows he can recover after losing a set.
A single tiebreak can also destroy an Under ticket quickly.
For example, 7-6, 6-4 equals 23 games.
Live Betting Opportunity
If the match begins with both players holding comfortably, avoid chasing a worse total.
Instead, watch for an early break.
If O’Connell breaks early and looks comfortable on serve, a live Under may become more attractive if the sportsbook moves the number upward.
Conversely, if Piros immediately establishes long return games and forces repeated break points, the pre-match Under thesis becomes considerably weaker.
Betting Mistake To Avoid
Don’t assume that because O’Connell is the favorite, O’Connell -1.5 sets is automatically the best bet.
The market already knows he is favored.
The more useful question is whether the favorite’s advantage translates into enough efficiency to keep the match below the total.
Bets We’re Avoiding
O’Connell -1.5 Sets is the market I would avoid pre-match.
It can win, but the price requires a fairly specific script. The Under 22.5 provides more flexibility because O’Connell can win in either two sets or a very tight two-set match without requiring a specific set margin.
Alternative Betting Option
Christopher O’Connell Moneyline — playable around -160 or better.
The available models consistently make him the favorite, and his qualifying results have been efficient. But the price is much less attractive than the total.
Best Bet
Recommended Market: Under 22.5 Games
Current Price: Around -115
Confidence: ★★★★☆
The strongest case for the Under is not that Piros cannot compete. It is that O’Connell has shown a more efficient path through qualifying, and the market’s favorite status gives the match a credible straight-set script. With several independent models also leaning toward O’Connell and at least one model putting the Under above 50%, the total offers a cleaner risk/reward profile than chasing the favorite at a heavily juiced moneyline.
Why Bettors Should Watch This
This match is a good example of why tennis betting should not stop at the moneyline.
The favorite can be correct without being the best bet.
The more useful betting exercise is identifying how the favorite is most likely to win and then choosing the market that best reflects that expected match script.
Final Score Prediction
Christopher O’Connell def. Zsombor Piros, 6-4, 6-4
Projected total: 20 games