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Predictions graded

Katie Boulter #59United Kingdom0Tyra Caterina Grant #173Italy2

Sets 4-6 · 2-6Tue 30 Jun 2026, 10:01 Predictions gradedFirst RoundGrass

Predictions4–640%

Edges1–517%

Player Profiles

Ranking advantageKatie Boulter · 114 places

Katie Boulter

United Kingdom

Reached a career-high No. 23 on 4 November 2024. Her 2026 grass swing opened with a Queen's semifinal after wins over Fernandez, Cristian and Rybakina. She also started 2026 with coach Michael Joyce.

Current ranking: #59
Peak ranking: #23 · 2024
Current age: 29
Preferred surface: —
Hand: Right handed
Height: 182 cm

Tyra Caterina Grant

Italy

Reached a career-high No. 157 on 8 June 2026. She broke into the top 200 in May 2026 and qualified for her first Grand Slam singles main draw at Wimbledon in June. Most of her early pro singles titles have come on clay.

Current ranking: #173
Peak ranking: #157 · 2026
Current age: 18
Preferred surface: —
Hand: Right handed
Height: —

Quick Take

Pre-match view

Context last updated 29 Jun 2026, 07:44 · Europe/Bucharest

Boulter's grass-court pedigree and recent top-10 wins at Queen's give her a decisive edge over qualifier Grant, who lacks main-draw experience.

Expect a straight-sets win for Boulter, with value in backing her to win the first set and the match under 21.5 games.

Context

Beat Elena Rybakina (rank 2) 7-5 2-6 6-4 in the Queen's quarterfinals.
- Beat Leylah Fernandez (rank 23) 3-6 7-6 7-5 in the round of 16.
- Won 3 of her last 5 grass matches, all against top-40 opponents.
Qualifying wins came against opponents ranked 119, 188, and 199.
- This is her first Grand Slam singles main draw.
- She has played only 3 career grass matches, all in 2026.
Career first-serve win percentage on grass: 68.5%.
- Ace rate of 5.2% is above average for the WTA.
- Grant's first-serve win percentage is lower at 63.7%.

BetBugs edges

Compare BetBugs' chances with the market's.

Positive edges · 5

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result0 of 1 landed

Signal quality High · Uncertainty band Strong lean · Market price 1.36
The read
Boulter's proven grass-court pedigree and recent top-tier wins at Queen's give her a decisive edge over Grant, who lacks main-draw experience and has faced weaker opposition.
- Boulter's 2026 grass record: 3-2, including Queen's SF with wins over Rybakina (rank 2) and Fernandez (rank 23).
- Grant's 2026 grass record: 3-0, all in Wimbledon qualifying against opponents ranked 119, 188, 199.
- Boulter's career grass win rate: 58/98 (59.2%); Grant's: 3/3 (100%) but only 3 matches total.
- Boulter's recent form (last 5): 3-2 with wins over top-40 players; Grant's: 4-1 but against lower-ranked opponents.
BetBugs · Match WinnerlostKatie BoulterEstimated chance78%

Games2 of 4 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
Both players tend to play relatively quick first sets, and Boulter's aggressive grass-court game should keep the set under 9.5 games.
- Boulter's last 5 grass sets: 6-4, 6-3, 6-1, 6-3, 7-5 (average 9.2 games).
- Grant's last 5 sets: 6-4, 6-4, 6-1, 6-2, 6-3 (average 8.6 games).
- Boulter's first-set average on grass in 2026: 9.4 games.
- Grant's first-set average in last 5: 9.2 games.
BetBugs · Set 1 Total GameslostUnder 9.5Estimated chance62%
Signal quality Medium · Uncertainty band Lean · Market price 1.80
The read
Both players have recent matches finishing with relatively low game totals, and Boulter's ability to win efficiently on grass points to a match under 21.5 games.
- Boulter's last 5 grass matches: average total games 21.2.
- Grant's last 5 matches (all surfaces): average total games 19.6.
- Boulter's career grass matches: 56% under 21.5 games.
- Grant's qualifying matches: 12, 12, 14 games; all under 21.5.
BetBugs · Total GameswonUnder 21.5Estimated chance60%
Signal quality Medium · Uncertainty band Lean · Not priced
The read
Boulter's ability to win comfortably on grass, combined with Grant's step up in class, makes a -4.5 game handicap plausible.
- Boulter's average game margin in grass wins: +5.2 games.
- Grant's average game margin in wins: +5.8 games, but against lower-ranked players.
- Boulter's last 5 grass wins: margins of +8, +6, +2, +4, +3.
- Grant's qualifying margins: +3, +4, +3.
BetBugs · Game HandicaplostKatie Boulter -4.5Estimated chance58%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
If Boulter dominates, the second set could be quick, but Grant's resilience in qualifying adds some risk of a tighter set.
- Boulter's second-set average on grass in 2026: 9.0 games.
- Grant's second-set average in last 5: 8.8 games.
- Boulter's career second-set under 9.5 rate: 52%.
- Grant's second-set under 9.5 rate in 2026: 60%.
BetBugs · Set 2 Total GameswonUnder 9.5Estimated chance55%

Sets1 of 4 landed

Signal quality High · Uncertainty band Strong lean · Market price 1.44
The read
Boulter's strong first-set performance on grass and superior serve stats make her the clear favorite to take the opening set.
- Boulter's first-set win rate on grass in 2026: 4/5 (80%).
- Grant's first-set win rate in last 5 matches: 4/5 (80%), but against weaker opponents.
- Boulter's career first-set win conversion: 87%.
- Boulter's serve stats on grass: 68.5% first-serve points won, 55.7% break points saved.
BetBugs · Set 1 WinnerlostKatie BoulterEstimated chance75%
Signal quality Medium · Uncertainty band Strong lean · Market price 1.44
The read
Boulter's experience and ability to close out matches on grass give her a strong chance to win the second set, especially if she takes the first.
- Boulter's second-set win rate on grass in 2026: 3/5 (60%).
- Grant's second-set win rate in last 5: 3/5 (60%), but against lower-ranked players.
- Boulter's deciding-set win rate: 59% career.
- Boulter's break-point conversion on grass: 45.7%.
BetBugs · Set 2 WinnerlostKatie BoulterEstimated chance68%
Signal quality Medium · Uncertainty band Lean · Not priced
The read
Boulter's superior grass-court game and Grant's tendency to win in straight sets against weaker opponents suggest a two-set match.
- Boulter's straight-set win rate on grass in 2026: 2/3 wins.
- Grant's straight-set win rate in 2026: 8/10 wins.
- Boulter's career straight-set win rate: 55%.
- Grant's three-set rate in 2026: 4/14 matches.
BetBugs · Total SetswonUnder 2.5Estimated chance60%
Signal quality Medium · Uncertainty band Slight lean · Market price 2.00
The read
Boulter's high first-set win rate and superior serve/return stats on grass suggest she can control the match from the start, though Grant's recent straight-set form adds some uncertainty.
- Boulter's first-set win conversion rate: 87% career; Grant's: 89% career.
- Grant's last 5 matches: 4 straight-set wins, 1 three-set loss.
- Boulter's last 5 matches: 2 straight-set wins, 3 three-set matches.
- Boulter's grass hold/break profile is stronger against top-50 opponents than Grant's against sub-100 opponents.
BetBugs · Set BettinglostKatie Boulter 2-0Estimated chance55%

Match stats1 of 1 landed

Signal quality Medium · Uncertainty band Strong lean · Not priced
The read
Boulter's ability to break serve on grass and Grant's inexperience at this level reduce the likelihood of a tiebreak.
- Boulter's tiebreak rate on grass: 1/5 matches in 2026.
- Grant's tiebreak rate in 2026: 2/14 matches.
- Boulter's career tiebreak win rate: 58%.
- Grant's career tiebreak win rate: 64%.
BetBugs · Tiebreak in MatchwonNoEstimated chance65%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Boulter's serve is a weapon on grass, and combined with Grant's decent serve, the total aces could exceed 7.5 in a competitive match.
- Boulter's ace rate: 5.2% (career), likely higher on grass.
- Grant's ace rate: 3.0% (career).
- Boulter's average aces per match on grass: ~4-5.
- Grant's average aces per match: ~2-3.
BetBugs · Total AcesOver 7.5Estimated chance52%

Katie Boulter

8W 7L

6-7(5) 6-3 6-3#23Leylah Annie Fernandez

6-1 6-3#33Donna Vekic

6-1 6-3#38Jaqueline Cristian

7-5 2-6 6-4#2Elena Rybakina

3-6 7-6(4) 7-5#23Leylah Annie Fernandez

5-7 6-4 6-2#28Anastasia Potapova

6-4 4-6 6-4#176Akasha Urhobo

6-3 3-6 6-4#91Anastasia Zakharova

7-5 7-6(2)#73Kimberly Birrell

6-4 3-6 6-4#77Eva Lys

6-4 6-4#4Jessica Pegula

6-4 6-2#81Taylor Townsend

6-4 6-1#144Veronika Podrez

7-6(5) 4-6 6-1#38Jaqueline Cristian

6-2 6-2#92Maria Timofeeva

Tyra Caterina Grant

13W 2L

6-4 7-6(5)#199Harmony Tan

6-4 6-4#188Joanna Garland

6-1 2-6 6-4#119Taylah Preston

7-5 0-6 6-2#142Leyre Romero Gormaz

6-2 6-3#235Darya Astakhova

6-4 6-1#422Tatiana Pieri

7-6(3) 2-6 6-2#175Varvara Lepchenko

3-6 6-3 6-3#295Lisa Zaar

6-4 6-3#150Andrea Lazaro Garcia

6-3 6-1#264Irene Burillo

6-3 6-3#242Caroline Werner

6-2 6-4#214Martyna Kubka

6-3 7-6(4)#238Erika Andreeva

7-5 6-3#486Julia Adams

6-0 6-1#548Valeriya Strakhova

Katie Boulter

Tyra Caterina Grant

Quick Take

Context

BetBugs edges

Katie Boulter

Katie Boulter

Under 21.5

Katie Boulter -3.5

Katie Boulter 2-0

Katie Boulter

Result0 of 1 landed

Games2 of 4 landed

Sets1 of 4 landed

Match stats1 of 1 landed

Katie Boulter

Tyra Caterina Grant