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Predictions graded

Madison Keys #23United States1Qinwen Zheng #127China2

Sets 6-1 · 6-7 · 5-7Sat 5 Sept 2026, 15:05 Predictions gradedThird RoundHard

Predictions5–363%

Edges2–250%

Player Profiles

Ranking advantageMadison Keys · 104 places

Madison Keys

United States

Keys lists hard court as her favorite surface and serve as her favorite shot. She reached career-high No. 5 in February 2025.

Current ranking: #23
Peak ranking: #5 · 2025
Current age: 31
Preferred surface: Hard
Hand: Right handed
Height: 178 cm

Qinwen Zheng

China

Chinese right-hander, age 23. Public results surfaced previous elbow-surgery and return context, but no reliable current-tournament report established an active fitness restriction for this match.

Current ranking: #127
Peak ranking: —
Current age: 23
Preferred surface: —
Hand: Right handed
Height: 178 cm

Quick Take

Pre-match view

Context last updated 4 Sep 2026, 06:07 · Europe/Bucharest

Keys has better recent form and a higher ranking, but Zheng's strong hard-court play and recent H2H win make this a close matchup.

The best betting value lies in the over on total games and Zheng covering the game handicap, while the match winner market offers no edge on Keys.

Context

Zheng, ranked 121, is a former Olympic champion and has a career 68.7% win rate, but her ranking has slipped after a poor grass season.
On hard courts in the last 15 matches, Zheng has a 70% win rate and 44.1% return points won, while Keys is at 66.7% and 43.5%. Zheng's current five-match winning streak at this tournament includes wins over Putintseva and Liutova, suggesting she is playing above her ranking.
- Zheng's last 15 hard-court record: 7-3 (70%).
- Keys' last 15 hard-court record: 6-3 (66.7%).
- Zheng has won five consecutive matches at the 2026 US Open.
Zheng, 23, is ranked No. 121 and right-handed. She missed the 2025 US Open and 2026 Australian Open after right-elbow surgery.
She returned through three qualifying wins, adding three matches to her schedule before this main-draw meeting. That extra workload could affect her late in a best-of-three match, though her five straight wins at this event suggest she is coping well.
- Zheng won three qualifying matches to reach the 2026 US Open main draw after missing the previous US Open and the 2026 Australian Open during recovery from right-elbow surgery.
- Stored recent sample: 5 wins from 5 tracked matches.
ConfirmedSources checked 4 Sep 2026, 06:06 · Europe/BucharestZheng qualifies for 2026 US Open, joins Kalieva, Stoiana, Basavareddywww.usopen.org · 29 Aug 2026Zheng defeats You; Andreescu, Pareja advance in US Open qualifyingwww.wtatennis.com · 24 Aug 2026
Keys and Zheng have split two career meetings, both on hard courts.
Zheng's 4-6 6-2 6-4 win in March 2026 is the most recent data point and suggests she can handle Keys' power on this surface. However, the sample is small and Keys won their only other meeting in 2023.
- Zheng defeated Keys 4-6 6-2 6-4 on hard court in March 2026.
- Keys won their previous meeting 7-5 6-1 in August 2023.
Keys, ranked 24, relies on a powerful first serve but has a career double-fault rate that can fluctuate.
In her last 15 matches, Keys has a strong 72.2% first-serve points won, but she averages 4.5 double faults per match. Zheng's return points won on hard courts is 44.1%, so she may pressure Keys' second serve.
- Keys' last 15 overall first-serve points won: 72.2%.
- Keys' last 15 overall double faults per match: 4.5.
- Zheng's last 15 hard-court return points won: 44.1%.

BetBugs edges

Compare BetBugs' chances with the market's.

Positive edges · 3

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result0 of 1 landed

Signal quality Medium · Uncertainty band Lean · Market price 1.50
The read
Keys has a stronger recent overall form and a slight edge in serve/return structure, while Zheng's qualifying route and lower ranking add uncertainty.
- Keys last-15 overall record 11-4 (73.3%), Zheng 9-6 (60%)
- Keys last-15 hard-court record 6-3 (66.7%), Zheng 7-3 (70%)
- Keys career hard-court win percentage 64.8%, Zheng 68.7%
- H2H 1-1, most recent 2026-03-22 Zheng won 4-6 6-2 6-4
BetBugs · Match WinnerlostMadison KeysEstimated chance58%

Games2 of 3 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
Both players have shown a tendency for longer matches, and their recent hard-court games averages support a total above 21.5.
- Keys last-15 average games per match 22.9, Zheng 23.4
- Keys last-15 hard-court average games per match 24.0, Zheng 21.4
- Both players have multiple three-set matches in recent form
BetBugs · Total GameswonOver 21.5Estimated chance60%
Signal quality Medium · Uncertainty band Lean · Not priced
The read
Zheng's competitive recent form and the close H2H suggest she can keep the match within 3.5 games.
- Keys last-15 average games won per match 12.8, Zheng 12.3
- Keys last-15 hard-court average games won per match 13.1, Zheng 12.1
- Zheng's recent hard-court record is strong at 7-3
BetBugs · Game HandicapwonQinwen Zheng +3.5Estimated chance60%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
The first set is likely to be competitive given both players' recent set-game averages and the H2H pattern.
- Keys last-15 average set games 9.8, Zheng 9.5
- Keys last-15 hard-court average set games 9.8, Zheng 8.9
- H2H most recent first set 4-6 (10 games)
BetBugs · Set 1 Total GameslostOver 9.5Estimated chance55%

Sets2 of 2 landed

Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Keys' slightly better recent hard-court return numbers and first-set conversion give her a marginal edge in the opening set.
- Keys first-set win conversion career 87%, Zheng 89%
- Keys last-15 first-serve points won 72.2%, Zheng 74.6%
- Keys last-15 hard-court first-serve points won 70.1%, Zheng 72.1%
BetBugs · Set 1 WinnerwonMadison KeysEstimated chance55%
Signal quality Medium · Uncertainty band Slight lean · Market price 2.30
The read
The match is likely to be closely contested, with a reasonable chance of going to a deciding set.
- Keys last-15 three-set rate 33%, Zheng 40%
- Combined three-set rate approximately 37%
- H2H most recent match went three sets
BetBugs · Total SetswonOver 2.5Estimated chance55%

Match stats1 of 1 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
Zheng's high ace rate and Keys' solid serving suggest a combined total above 12.5 aces is likely.
- Keys last-15 aces per match 4.8, Zheng 8.9
- Keys last-15 hard-court aces per match 5.4, Zheng 8.3
- Combined average aces per match 13.7 overall, 13.7 on hard
BetBugs · Total Acesnot gradableOver 12.5Estimated chance60%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Both players have relatively high double fault rates, making over 9.5 double faults a reasonable expectation.
- Keys last-15 double faults per match 4.5, Zheng 5.6
- Keys last-15 hard-court double faults per match 5.2, Zheng 5.0
- Combined average double faults per match 10.1 overall, 10.2 on hard
BetBugs · Total Double Faultsnot gradableOver 9.5Estimated chance55%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
The competitive nature of the match and both players' tiebreak history suggest a tiebreak is more likely than not.
- Keys career tiebreak win percentage 57%, Zheng 55%
- Keys last-15 has 3 tiebreaks in 15 matches, Zheng has 2 in 15
- Both players have played multiple close sets recently
BetBugs · Tiebreak in MatchwonYesEstimated chance55%

Prediction history

Madison Keys has been highly reliable when projected to win

Madison Keys has fulfilled 12 of 15 win predictions, an 80% success rate. Her average estimated probability was 72.2%, with an expected 10.8 wins, so she has outperformed expectations. All three misses came as losses, and her current 58% probability sits within her historical range of 55–85%.

Recent evidence for Madison Keys15 matches

Date / competitionMatch resultPredictedActualResult

28 Jul·WTA Washington

#69Liudmila Samsonova2-1#23Madison Keys

BetBugsMadison Keys to win·72%

Missed

28 Jul 2026

WTA Washington

#69Liudmila Samsonova2-1#23Madison Keys

Madison Keys to win

72%probability

Liudmila Samsonova won

Missed

6 Jul·WTA Wimbledon

#22Madison Keys0-2#12Linda Noskova

BetBugsMadison Keys to win·55%

Missed

6 Jul 2026

WTA Wimbledon

#22Madison Keys0-2#12Linda Noskova

Madison Keys to win

55%probability

Linda Noskova won

Missed

4 Jul·WTA Wimbledon

#6Amanda Anisimova1-2#22Madison Keys

BetBugsMadison Keys to win·58%

Matched

4 Jul 2026

WTA Wimbledon

#6Amanda Anisimova1-2#22Madison Keys

Madison Keys to win

58%probability

Madison Keys won

Matched

2 Jul·WTA Wimbledon

#196Katie Swan0-2#22Madison Keys

BetBugsMadison Keys to win·82%

Matched

2 Jul 2026

WTA Wimbledon

#196Katie Swan0-2#22Madison Keys

Madison Keys to win

82%probability

Madison Keys won

Matched

30 Jun·WTA Wimbledon

#138Kayla Day1-2#27Madison Keys

BetBugsMadison Keys to win·85%

Matched

30 Jun 2026

WTA Wimbledon

#138Kayla Day1-2#27Madison Keys

Madison Keys to win

85%probability

Madison Keys won

Matched

Head-to-Head

1-1 (2 meetings)

L4-6 6-2 6-4Madison Keys#24vQinwen Zheng#121Mar 22, 2026

W7-5 6-1Madison Keys#24vQinwen Zheng#121Aug 2, 2023

2 total meetings

Previous match context available

Madison Keys

11W 4L

5-7 6-4 7-6(5)#73Anna Bondar 7-5 6-4#69Alina Korneeva

3-6 6-4 7-6(5)#30Sara Bejlek

7-6(3) 6-4#80Xiyu Wang

6-1 6-3#42Katerina Siniakova

4-6 6-3 6-3#45Daria Snigur

6-3 6-1#11Marta Kostyuk

6-1 6-2#85Antonia Ruzic

3-6 6-4 6-4#47Liudmila Samsonova

6-4 7-6(2)#6Linda Noskova

3-6 6-2 6-3#10Amanda Anisimova

6-1 6-4#207Katie Swan

6-7(5) 6-4 6-3#117Kayla Day

7-5 6-4#83Tatjana Maria

6-1 ret.#77Petra Marcinko

Qinwen Zheng

9W 6L

6-4 2-6 6-1#84Yulia Putintseva 4-6 6-3 6-1#125Kristina Liutova 6-4 3-6 6-0#186Elena Pridankina

6-1 7-5#416Clara Burel

6-3 6-2#206Xiaodi You

6-3 6-4#76Lanlana Tararudee

4-6 6-4 6-1#18Alexandra Eala

6-4 6-4#29Barbora Krejcikova

6-4 6-1#277Elena Micic

7-5 6-1#105Jessica Bouzas Maneiro

6-4 6-4#42Katerina Siniakova

5-7 6-4 6-2#38Clara Tauson

7-5 4-6 6-4#91Solana Sierra

6-3 7-6(10)#63Talia Gibson

4-6 7-6(1) 6-4#35Maria Sakkari

Stat Battle

Last 15 match performance, compared side by side.

MKMadison KeysKeys

Last 15

5–2

9 core stats · 2 even

Qinwen ZhengZhengQZ

Madison Keys carries the stronger recent form — Qinwen Zheng's route runs through serve.

Serve · 2–2 · 1 even

1st Serve In15/15 · 14/1560.3%+8.6pp51.7%

1st Serve Won15/15 · 14/1572.2%+2.4pp74.6%

2nd Serve Won15/15 · 14/1549.7%—50.0%

Aces / Match15/15 · 14/154.8+4.18.9

Double Faults / Match15/15 · 14/154.51.1 fewer5.6

Return · 1–0

Return Pts Won15/15 · 14/1542.6%+2.7pp39.9%

Pressure · 1–0 · 1 even

Break Pts Converted15/15 · 14/1539.4%—39.8%

Break Pts Saved15/15 · 14/1565.9%+4.2pp61.7%

Points · 1–0

Total Pts Won15/15 · 14/1552.6%+1.5pp51.1%

Shot making · 1–2Limited data · 6 vs 5

Winners / Match6/15 · 5/1527.8+3.224.6

Unforced Errors / Match6/15 · 5/1533.07.0 fewer26.0

Net Pts Won6/15 · 5/1563.8%+11.8pp75.6%

Serve · 2–2 · 1 even

60.3%1st Serve In15/15 · 14/15+8.6pp51.7%

72.2%1st Serve Won15/15 · 14/15+2.4pp74.6%

49.7%2nd Serve Won15/15 · 14/15—50.0%

4.8Aces / Match15/15 · 14/15+4.18.9

4.5Double Faults / Match15/15 · 14/151.1 fewer5.6

Return · 1–0

42.6%Return Pts Won15/15 · 14/15+2.7pp39.9%

Pressure · 1–0 · 1 even

39.4%Break Pts Converted15/15 · 14/15—39.8%

65.9%Break Pts Saved15/15 · 14/15+4.2pp61.7%

Points · 1–0

52.6%Total Pts Won15/15 · 14/15+1.5pp51.1%

Shot making · 1–2Limited data · 6 vs 5

27.8Winners6/15 · 5/15+3.224.6

33.0Unforced Errors6/15 · 5/157.0 fewer26.0

63.8%Net Pts Won6/15 · 5/15+11.8pp75.6%

Madison Keys #23United States1Qinwen Zheng #127China2

Player Profiles

Madison Keys

Qinwen Zheng

Quick Take

Context

BetBugs edges

Qinwen Zheng +2.5

Over 22.5

Over 2.5

Madison Keys

BetBugs probabilities

Result0 of 1 landed

Games2 of 3 landed

Sets2 of 2 landed

Match stats1 of 1 landed

Madison Keys has been highly reliable when projected to win

Head-to-Head

Madison Keys

Qinwen Zheng

Stat Battle