Kayla Day vs Kimberly BirrellPrediction, Head-to-Head Results, and Stats
Upcoming match
- Tournament
- Japan Open - Osaka
- Level
- WTA 250
- Round
- 1st Round
- Surface
- Hard
- Date & time
- October 19 · 1:30 AM ET
Book odds
Set spread
Game spread
Record at prices like this
At 2.36 or longer, Kayla Day has won 3 of 26 (12%). The price implied 33%, so Kayla Day has fallen 21 points short of it.
At 1.56 or shorter, Kimberly Birrell has won 20 of 31 (65%). That is level with the 66% the price implied.
Book prices with the bookmaker margin removed, across every priced match we hold for each player. Green beats the price by 3 points or more, red falls that far short, grey is within 3 points. Samples under ten are not shown.
Kayla Day and Kimberly Birrell meet next at the Japan Open - Osaka on October 19 on hard.
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Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Day | Birrell | ||
|---|---|---|---|---|
| Indicator | Kayla Day | Kimberly Birrell | ||
| Wins in straight sets | 78% | 39/50 | 59% | 22/37 |
| Wins a set when losing | 39% | 9/23 | 44% | 12/27 |
| Goes to a deciding set | 27% | 20/73 | 42% | 27/64 |
| Covers −1.5 sets as favorite | 59% | 34/58 | 44% | 14/32 |
| Covers +1.5 sets as underdog | 69% | 9/13 | 63% | 19/30 |
| Tiebreak sets won | 52% | 11/21 | 45% | 10/22 |
| Wins after taking set 1 | 92% | 44/48 | 85% | 29/34 |
| Wins 2-0 after taking set 1 | 81% | 39/48 | 65% | 22/34 |
Colored rows are higher-is-better: green above 50%, red below. Favorite/underdog set by book odds; cover rows count only matches with odds on record.
Style Matchup
Playing styles and historical archetype record
Day
💥 Big Hitter
Birrell
🏹 Frontrunner
Matchup analysis
💥 Big Hitter vs 🏹 Frontrunner is historically tight (51% vs 49%, 1,196 matches). Neither style has a clear edge, so form, surface, and the head-to-head matter most.
Previous meetings
First career meeting
Day and Birrell have never faced each other on tour.
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Day | Birrell | ||
|---|---|---|---|---|
| Outcome | Kayla Day | Kimberly Birrell | ||
| 1 or more | 100% | 15/15 | 79% | 11/14 |
| 3 or more | 87% | 13/15 | 29% | 4/14 |
| 5 or more | 60% | 9/15 | 14% | 2/14 |
| 10 or more | 0% | 0/15 | 0% | 0/14 |
| 15 or more | 0% | 0/15 | 0% | 0/14 |
| 20 or more | 0% | 0/15 | 0% | 0/14 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Day | Birrell |
|---|---|---|
| W-L | 12–8 | 7–7 |
| Avg odds | 1.89 | 2.14 |
| ROI % | -15.2% | -2.6% |
| Units P/L | -3.03u | -0.37u |
Travel
Last 30 days
| Metric | Day | Birrell |
|---|---|---|
| Countries | 3 | 4 |
| Events | 3 | 4 |
| Matches | 8 | 8 |
| Distance | — | 2,508 mi · 4,037 km |
| Route | USA → TUR → SUI | POR → ROU → CZE → SUI |
Host country from each tournament in the last 30 days, including the current event even when a player arrived on a bye. Route is the order of countries visited; consecutive stops in the same country are shown once. Distance is the great-circle total between host cities, shown only when every stop in the window is geocoded. A rough fatigue signal, not a headline stat.
Common opponents
Results vs. opponents both players faced · Last 12 months
Across 2 shared opponents, both Day and Birrell posted a 50% win rate.
| Opponent | Day | Birrell |
|---|---|---|
| Maya Joint | L 36 63 36 | W 64 62 |
| Yue Yuan | W 26 75 63 | L 36 26 |
Recent Form
Last five matches per player
Maya Joint
Japan Open - Osaka · 3rd Round Qualifying
Oct 18
Ena Koike
Japan Open - Osaka · 1st Round Qualifying
Oct 17
Amelie Van Impe
W100 Templeton · 1st Round
Sep 30
Janae Preston
W50 Berkeley · Final
Sep 27
Ella Mcdonald
W50 Berkeley · Semifinals
Sep 26
Anna Sinclair Rogers
W50 Berkeley · Quarterfinals
Sep 25
Evialina Laskevich
W50 Berkeley · 2nd Round
Sep 24
Arina Bulatova
W50 Berkeley · 1st Round
Sep 23
Katie Volynets
Wuhan Open - Wuhan · 1st Round
Oct 13
Marie Bouzkova
China Open - Beijing · 2nd Round
Oct 3
Aoi Ito
China Open - Beijing · 1st Round
Oct 1
Maya Joint
Korea Open - Seoul · Final
Sep 27
Anna Bondar
Korea Open - Seoul · Semifinals
Sep 26
Katie Volynets
Korea Open - Seoul · Quarterfinals
Sep 26
Ye Xin Ma
Korea Open - Seoul · 2nd Round
Sep 24
Tamara Zidansek
Korea Open - Seoul · 1st Round
Sep 22
Win rate
Matches, sets and games won · Last 12 months · 64–73 matches
| Metric | Day | Birrell |
|---|---|---|
| Matches won | 68% | 58% |
| Sets won | 66% | 55% |
| Games won | 56% | 52% |