Rion Itaya vs Sayaka IshiiPrediction, Head-to-Head Results, and Stats
Rion Itaya and Sayaka Ishii have met 1 time since 2026; Sayaka Ishii leads 1–0. Across all meetings Itaya has taken 0 sets to Ishii's 2. Their most recent meeting: Sayaka Ishii won at W50 Nanao (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Itaya | Ishii | ||
|---|---|---|---|---|
| Indicator | Rion Itaya | Sayaka Ishii | ||
| Wins in straight sets | 100% | 3/3 | 65% | 17/26 |
| Wins a set when losing | 25% | 1/4 | 17% | 4/23 |
| Goes to a deciding set | 14% | 1/7 | 27% | 13/49 |
| Covers −1.5 sets as favorite | 100% | 1/1 | 32% | 8/25 |
| Covers +1.5 sets as underdog | 50% | 2/4 | 44% | 7/16 |
| Tiebreak sets won | 67% | 2/3 | 53% | 8/15 |
| Wins after taking set 1 | 100% | 3/3 | 91% | 20/22 |
| Wins 2-0 after taking set 1 | 100% | 3/3 | 77% | 17/22 |
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. Small sample — read with care. Head-to-head: 1 of 1 completed meetings ended in straight sets (Itaya 0, Ishii 1).
Previous meetings
1 career meeting, newest first
Sep 25, 2026
W50 Nanao
? Carpet · Quarterfinals
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Itaya | Ishii |
|---|---|---|
| W-L | 2–1 | 13–8 |
| Avg odds | 4.27 | 1.56 |
| ROI % | +142.0% | -12.1% |
| Units P/L | +4.26u | -2.55u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Itaya | Ishii |
|---|---|---|
| Countries | 1 | 2 |
| Events | 1 | 2 |
| Matches | 3 | 8 |
| Distance | — | — |
| Route | AUT | ESP → AUT |
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.
Recent Form
Last five matches per player
Sayaka Ishii
W50 Nanao · Quarterfinals
Sep 25
Kurea Hayasaka
W50 Nanao · 2nd Round
Sep 24
Yui Chikaraishi
W50 Nanao · 1st Round
Sep 23
Ramu Ueda
W35 Fukuoka · 1st Round Qualifying
May 4
Nanami Goto
W35 Miyazaki · 1st Round Qualifying
Apr 20
Eri Shimizu
W35 Hamamatsu 1 · 2nd Round
Nov 6
Sae Noguchi
W35 Hamamatsu 1 · 1st Round
Nov 5
Hiromi Abe
W50 Nanao · Semifinals
Sep 26
Rion Itaya
W50 Nanao · Quarterfinals
Sep 25
Natsumi Kawaguchi
W50 Nanao · 2nd Round
Sep 24
Nagi Hanatani
W50 Nanao · 1st Round
Sep 23
Rira Kosaka
W50 Nanao · 3rd Round Qualifying
Sep 22
Miku Suzuki
W50 Nanao · 1st Round Qualifying
Sep 21
Hiromi Abe
W35 Kyoto · Quarterfinals
Sep 18
Amelia Rajecki
W35 Kyoto · 2nd Round
Sep 17
Win rate
Matches, sets and games won · Last 12 months · 7–49 matches
| Metric | Itaya | Ishii |
|---|---|---|
| Matches won | 43% | 53% |
| Sets won | 47% | 50% |
| Games won | 47% | 51% |
Record by tier
Head-to-head record by tournament tier
| Stage | Itaya | Ishii |
|---|---|---|
| ITF W50 | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Itaya | Ishii |
|---|---|---|
| Carpet | 0 | 1 |
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