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Predictions graded

Solana Sierra #56Argentina1Cori Gauff #7United States2

Sets 3-6 · 6-3 · 6-7Wed 1 Jul 2026, 14:09 Predictions gradedSecond RoundGrass

Predictions4–450%

Edges2–250%

Player Profiles

Ranking advantageCoco Gauff · 49 places

Solana Sierra

Argentina

Argentine right-hander whose WTA profile says she grew up on clay and prefers clay courts. WTA rank history shows she rose from year-end No. 66 in 2025 to a career-best No. 56 in June 2026.

Current ranking: #56
Peak ranking: #56 · 2026
Current age: 22
Preferred surface: Clay
Hand: Right handed
Height: 172 cm

Coco Gauff

United States

Grand Slam champion with a career-high singles ranking of No. 2. WTA's bio lists hard as her favorite surface and describes an aggressive, big-serve style; she arrived at Wimbledon 2026 ranked No. 7.

Current ranking: #7
Peak ranking: #2 · 2024
Current age: 22
Preferred surface: Hard
Hand: Right handed
Height: 175 cm

Quick Take

Pre-match view

Context last updated 30 Jun 2026, 07:29 · Europe/Bucharest

Cori Gauff is a heavy favorite over Solana Sierra, with a 2-0 H2H record and dominant grass-court form after a quick R1 win.

Sierra's three-set battle and fatigue make an upset unlikely, and the best value lies in under 19.5 total games, as Gauff's serve and return should control the match. Gauff's straight-sets win is probable, but Sierra's fight could push the total games slightly higher.

Context

Gauff's R1 win took 58 minutes and she lost only three games.
- She faced zero break points, showing a strong serve and return combination.
- This was her first grass win since 2024, breaking a four-match losing streak on the surface.
Sierra's R1 match lasted 2 hours and 45 minutes, much longer than Gauff's 58-minute win.
- She saved two match points before winning, indicating a stressful finish.
- Her recent form includes multiple three-set matches, but this was her most grueling recent contest.
Gauff won 6-1, 6-1 on hard court in January 2026 and 5-7, 6-0, 6-4 on clay in May 2026.
- In the clay match, Sierra led 3-0 in the third set before Gauff won six straight games.
- Gauff has won 4 of 5 sets played, with the only loss being a tight 7-5 set.

BetBugs edges

Compare BetBugs' chances with the market's.

Positive edges · 1

Other edges · 3

The published chance does not exceed the market's implied chance.

Match WinnerwonUncertainty band: Strong lean

Cori Gauff

1.15fair 1.22

BetBugs 82% · Market 87%

0.0ppshort

Gauff's dominant H2H record and superior grass-court pedigree make her a strong favorite, though the odds offer no value.

Set 1 WinnerwonUncertainty band: Strong lean

Cori Gauff

1.25fair 1.33

BetBugs 75% · Market 80%

0.0ppshort

Gauff's strong starts and Sierra's tendency to drop the opening set make Gauff the clear favorite for set 1.

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result1 of 1 landed

Signal quality High · Uncertainty band Strong lean · Market price 1.15
The read
Gauff's superior grass pedigree, dominant H2H record, and efficient R1 performance make her a strong favorite over Sierra, who struggled in her opener.
- Gauff leads H2H 2-0, including a 5-7 6-0 6-4 win on clay in May 2026 where she dominated the second set and rallied from 0-3 in the third.
- Gauff's career grass win rate is 25-10 (71.4%), while Sierra is 9-5 (64.3%) on grass with most wins at lower levels.
- Gauff's recent form: 6-2 6-1 win over Korpatsch in Wimbledon R1, facing no break points and snapping a grass losing streak.
- Sierra needed 3 sets and saved match points in R1 vs Bondar, indicating a tougher path and potential fatigue.
BetBugs · Match WinnerwonCori GauffEstimated chance82%

Games2 of 4 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
Gauff's ability to dominate early on serve and return points to a quick first set, likely under 9.5 games.
- Gauff's R1 first set was 6-2 (8 games); H2H first sets were 6-1 (7 games) and 7-5 (12 games).
- Sierra's first-serve points won is only 61.9%, and Gauff's return game is aggressive on grass.
- Gauff faced no break points in her R1 match, suggesting she can hold easily and break early.
BetBugs · Set 1 Total GameswonUnder 9.5Estimated chance60%
Signal quality Medium · Uncertainty band Slight lean · Not priced
The read
If Gauff maintains her R1 level, the match could be one-sided, keeping total games under 20.5, though Sierra's resilience might push it slightly over.
- Gauff's last match vs Korpatsch had 15 games; Sierra's R1 had 33 games, but Gauff's matches vs lower-ranked opponents often finish quickly.
- H2H matches: 6-1 6-1 (14 games) and 5-7 6-0 6-4 (28 games), averaging 21 games.
- Gauff's serve dominance (68% first-serve win rate) and Sierra's low second-serve win rate (45.1%) could lead to quick holds and breaks.
BetBugs · Total GameslostUnder 20.5Estimated chance55%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Sierra's resilience may lead to a tighter second set, pushing total games over 8.5 even if Gauff ultimately wins.
- Sierra has shown fight in second sets, winning the second set 7-5 in R1 and pushing Gauff to 6-4 in their clay meeting.
- Gauff's second-set performance can dip; she lost the second set 6-3 vs Badosa recently.
- Sierra's return points won is 49% career, which could pressure Gauff's second serve (44% win rate).
BetBugs · Set 2 Total GameswonOver 8.5Estimated chance55%
Signal quality Medium · Uncertainty band Slight lean · Not priced
The read
If Gauff plays at her R1 level, she could cover a -4.5 game handicap, though Sierra's fighting spirit adds risk.
- Gauff's average game margin in H2H wins: +13 (6-1 6-1) and +6 (5-7 6-0 6-4).
- Gauff's R1 win was by 9 games (12-3).
- Sierra's matches are often close, but Gauff's level on grass could create a wider gap.
BetBugs · Game HandicaplostCori Gauff -4.5Estimated chance55%

Sets1 of 2 landed

Signal quality High · Uncertainty band Strong lean · Market price 1.25
The read
Gauff's strong starts and Sierra's tendency to drop the opening set make Gauff the clear favorite for set 1.
- Gauff has won the first set in both H2H meetings (6-1, 7-5).
- Gauff's first-set win conversion rate is 92% career, and she won her R1 first set 6-2.
- Sierra lost her R1 first set 3-6 before rallying, indicating slow starts.
BetBugs · Set 1 WinnerwonCori GauffEstimated chance75%
Signal quality Medium · Uncertainty band Lean · Market price 1.50
The read
Gauff's ability to overpower Sierra in previous meetings and her current grass form suggest a straight-sets win is likely, though Sierra's fighting spirit could force a decider.
- Gauff won in straight sets in their only hard-court meeting (6-1 6-1 in Jan 2026) and dominated the second set 6-0 on clay.
- Sierra's first-serve win rate is 61.9%, but Gauff's return points won is 46% career, and she converted 45% of break points in H2H.
- Gauff's R1 win was a 6-2 6-1 rout in under an hour, showing sharp form on grass.
BetBugs · Set BettinglostCori Gauff 2-0Estimated chance60%

Match stats0 of 1 landed

Signal quality Medium · Uncertainty band Strong lean · Not priced
The read
Given Gauff's dominance and the likelihood of breaks, a tiebreak is unlikely in this matchup.
- No tiebreaks in two H2H meetings.
- Gauff's tiebreak win rate is 62%, but she rarely plays them (none in recent grass matches).
- Sierra's tiebreak win rate is 59%, but her matches often feature breaks rather than tiebreaks.
BetBugs · Tiebreak in MatchlostNoEstimated chance70%
Signal quality Medium · Uncertainty band Strong lean · Not priced
The read
Gauff's powerful serve on grass should produce enough aces to push the total over 5.5, with Sierra contributing occasionally.
- Gauff averages 5.1 aces per match (ace rate 5.1%), and hit 3 aces in two H2H meetings.
- Sierra's ace rate is 1.9%, but on grass, both players may see an uptick in aces.
- In Gauff's R1, she likely hit multiple aces in a dominant serving performance.
BetBugs · Total AcesOver 5.5Estimated chance65%
Signal quality Medium · Uncertainty band Lean · Not priced
The read
Both players' high double-fault rates, especially Gauff's, make over 7.5 double faults likely in a best-of-3 match.
- Gauff's double-fault rate is 8.1% (career), and she had 9 double faults in H2H matches.
- Sierra's double-fault rate is 6.6%, and she had 8 double faults in H2H.
- Grass can amplify serving errors; both players have high double-fault counts historically.
BetBugs · Total Double FaultsOver 7.5Estimated chance60%

Markets to Avoid

High-risk markets where price or context leaves too little cushion.

Pre-match flagged 3 avoid-market areas; caution remains warranted in high-variance spots.

Head-to-Head

0-2 (2 meetings)

L5-7 6-0 6-4Solana Sierra#56vCori Gauff#7May 9, 2026

L6-1 6-1Solana Sierra#56vCori Gauff#7Jan 3, 2026

2 total meetings

Solana Sierra

10W 5L

6-3 5-7 7-5#74Anna Bondar

7-5 4-6 6-4#138Qinwen Zheng

3-6 7-5 6-4#114Anna Blinkova

6-2 6-1#100Ella Seidel

6-4 6-3#50Caty McNally

6-4 5-7 6-3#154Lois Boisson

6-0 6-0#18Sorana Cirstea

3-6 6-4 6-3#17Jasmine Paolini

6-0 7-6(4)#33Emma Raducanu

6-3 7-5#67Dayana Yastremska

3-6 6-2 6-2#127Kaja Juvan

6-4 6-0#192Carole Monnet

5-7 6-0 6-4#7Cori Gauff

6-2 6-3#66Anhelina Kalinina

6-3 6-1#78Tamara Korpatsch

Cori Gauff

10W 5L

6-2 6-1#78Tamara Korpatsch

1-6 6-3 6-2#141Paula Badosa Gibert

4-6 7-6(1) 6-4#28Anastasia Potapova

6-3 6-2#109Mayar Sherif

6-4 6-0#79Taylor Townsend

6-4 6-7(3) 6-2#8Elina Svitolina

6-4 6-3#18Sorana Cirstea

4-6 6-2 6-4#5Mirra Andreeva

5-7 7-5 6-2#16Iva Jovic

5-7 6-0 6-4#56Solana Sierra

6-3 6-4#54Tereza Valentova

6-4 1-6 7-6(5)#12Linda Noskova

4-6 7-5 6-1#18Sorana Cirstea

6-3 6-0#132Leolia Jeanjean

6-3 5-7 6-3#9Karolina Muchova

Solana Sierra #56Argentina1Cori Gauff #7United States2

Player Profiles

Solana Sierra

Coco Gauff

Quick Take

Context

BetBugs edges

Under 19.5

Cori Gauff

Cori Gauff

Cori Gauff 2-0

BetBugs probabilities

Result1 of 1 landed

Games2 of 4 landed

Sets1 of 2 landed

Match stats0 of 1 landed

Markets to Avoid

Sierra, Solana 2-1 @ 10.00

Head-to-Head

Solana Sierra

Cori Gauff