Elvina Kalieva vs Sofia CostoulasPrediction, Head-to-Head Results, and Stats
🇺🇸Elvina Kalieva
#112 · 22 yrs · Right-Handed
1 meeting · sets 2–1
🇧🇪Sofia Costoulas
#159 · 21 yrs
Elvina Kalieva and Sofia Costoulas have met 1 time since 2026; Elvina Kalieva leads 1–0. Across all meetings Kalieva has taken 2 sets to Costoulas's 1. Their most recent meeting: Elvina Kalieva won at U.S. Open - New York (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Kalieva | Costoulas | ||
|---|---|---|---|---|
| Indicator | Elvina Kalieva | Sofia Costoulas | ||
| Wins in straight sets | 63% | 29/46 | 69% | 27/39 |
| Wins a set when losing | 41% | 13/32 | 37% | 11/30 |
| Goes to a deciding set | 38% | 30/78 | 33% | 23/69 |
| Covers −1.5 sets as favorite | 45% | 19/42 | 47% | 22/47 |
| Covers +1.5 sets as underdog | 66% | 21/32 | 58% | 11/19 |
| Tiebreak sets won | 60% | 12/20 | 38% | 6/16 |
| Wins after taking set 1 | 89% | 34/38 | 81% | 34/42 |
| Wins 2-0 after taking set 1 | 76% | 29/38 | 64% | 27/42 |
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. Head-to-head: 0 of 1 completed meetings ended in straight sets (Kalieva 0, Costoulas 0).
Style Matchup
Playing styles and historical archetype record
Kalieva
🤖 Servebot
Costoulas
💥 Big Hitter
Matchup analysis
🤖 Servebot vs 💥 Big Hitter is historically tight (51% vs 49%, 3,072 matches). Neither style has a clear edge, so form, surface, and the head-to-head matter most.
Previous meetings
1 career meeting, newest first
Aug 27, 2026
U.S. Open - New York
H Hard · 2nd Round Qualifying
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Kalieva | Costoulas | ||
|---|---|---|---|---|
| Outcome | Elvina Kalieva | Sofia Costoulas | ||
| 1 or more | 96% | 21/22 | 94% | 16/17 |
| 3 or more | 86% | 19/22 | 41% | 7/17 |
| 5 or more | 41% | 9/22 | 12% | 2/17 |
| 10 or more | 0% | 0/22 | 0% | 0/17 |
| 15 or more | 0% | 0/22 | 0% | 0/17 |
| 20 or more | 0% | 0/22 | 0% | 0/17 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Kalieva | Costoulas |
|---|---|---|
| W-L | 11–10 | 8–10 |
| Avg odds | 2.04 | 1.49 |
| ROI % | +3.1% | -42.0% |
| Units P/L | +0.65u | -7.56u |
Travel
Last 30 days
| Metric | Kalieva | Costoulas |
|---|---|---|
| Countries | 2 | 3 |
| Events | 3 | 3 |
| Matches | 8 | 4 |
| Distance | — | — |
| Route | POR → ROU | SGP → CHN → ROU |
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 10 shared opponents, both Kalieva and Costoulas posted a 50% win rate.
| Opponent | Kalieva | Costoulas |
|---|---|---|
| Kyoka Okamura | L 16 67 | L 46 67 |
| Ye Xin Ma | W 63 64 | W 75 63 |
| Kristina Mladenovic | W 62 16 61 | W 62 75 |
| Yexin Ma | W 64 62 | W 76 63 |
| Lanlana Tararudee | L 36 76 26 | L 46 36 |
| Matilde Jorge | L 67 57 | L 67 06 |
| Hayu Kinoshita | W 76 75 | W 64 26 75 |
| Hanyu Guo | L 26 62 67 | L 36 46 |
| Polona Hercog | L 36 16 | L 16 26 |
| Astrid Lew Yan Foon | W 57 62 60 | W 62 62 |
Recent Form
Last five matches per player
Kyoka Okamura
Suzhou WTA 125 - Suzhou · Semifinals
Oct 10
Aliaksandra Sasnovich
Suzhou WTA 125 - Suzhou · Quarterfinals
Oct 9
Tamara Korpatsch
Suzhou WTA 125 - Suzhou · 2nd Round
Oct 8
Ye Xin Ma
Suzhou WTA 125 - Suzhou · 1st Round
Oct 5
Viktorija Golubic
China Open - Beijing · 1st Round
Sep 30
Han Shi
China Open - Beijing · 3rd Round Qualifying
Sep 29
Ellen Perez
China Open - Beijing · 1st Round Qualifying
Sep 28
Katie Volynets
Korea Open - Seoul · 1st Round
Sep 21
Darya Astakhova
Suzhou WTA 125 - Suzhou · 1st Round
Oct 5
Sofya Lansere
Jingshan Tennis Open - Jingshan · 2nd Round
Oct 1
Kristina Mladenovic
Jingshan Tennis Open - Jingshan · 1st Round
Sep 29
Tatiana Prozorova
Singapore Tennis Open - Singapore · 1st Round
Sep 22
Hina Inoue
W50 Guiyang · 1st Round
Sep 8
Zhuoxuan Bai
W75 Tianjin · Quarterfinals
Sep 4
Kristiana Sidorova
W75 Tianjin · 2nd Round
Sep 3
Unknown Player
W75 Tianjin · 1st Round
Sep 2
Win rate
Matches, sets and games won · Last 12 months · 69–78 matches
| Metric | Kalieva | Costoulas |
|---|---|---|
| Matches won | 59% | 57% |
| Sets won | 56% | 55% |
| Games won | 52% | 53% |
Record by tier
Head-to-head record by tournament tier
| Stage | Kalieva | Costoulas |
|---|---|---|
| Grand Slam | 1 | 0 |
By surface
Head-to-head record per surface
| Surface | Kalieva | Costoulas |
|---|---|---|
| Hard | 1 | 0 |
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