Mary Stoiana: Ranking, Schedule & Stats
Mary Stoiana is a professional tennis player from United States, born 6 May 2003. The American competes on the WTA Tour. Among WTA players under 24, Stoiana is ranked No. 31. The American was born in Southbury.
This page tracks Mary Stoiana's upcoming schedule, latest results, recent form and surface record, with each match linking through to a detailed head-to-head and pre-match analysis. Scores update live as matches are played.
Current form
2026 season2026Stoiana has won 20 of the last 30 first sets
Stoiana has won 5 of 13 deciding sets
Stoiana has won 67% of matches on grass
Stoiana has won 6 of the last 10 matches
Ratings & strengths
Umpiry ratings · updated daily0–100 percentile vs currently-ranked players, opponent-adjusted over 52 weeks. By-surface ratings are percentiles within each surface's field (not directly comparable across surfaces). Sub-components are percentiles too; aces are a style descriptor (not in the rating). About
Surface performanceSurfaces
2026 seasonLast 12 monthsCareerGrass is the clear edge: 4 losses in 12 matches this season.
Grass is the clear edge: 4 losses in 12 matches over the last 12 months.
Grass is the clear edge: 4 losses in 12 matches across the career.
Ranking & projection
WTA ranking · not EloWTA · not EloRecent results
Last 5Beyond today · rivals & careerBeyond today
Rivals
Most meetings
Most-played rivals. The record is Stoiana's wins–losses across all matches we have, qualifying excluded.
Season
Current seasonResults
Season statistics
2026 · 5 matches · vs Top 100 averageSeason breakdown
2026 · by level, surface, opponent, sets2026Career
Career overview
Best results in our records over the last ~12 months; the top 18 count toward the WTA ranking (best-18 rule). Totals are derived from our data and can differ from the official ranking, which has mandatory-event rules and includes the Tour Finals.
More career statistics
Career serve & return
Absolute totals across the 52 matches we have on record. Green is Stoiana, grey is the same stat by the players they faced.
Aces
| Stoiana | 222 |
|---|---|
| Opponents | 281 |
Double faults
| Stoiana | 454 |
|---|---|
| Opponents | 559 |
1st serve in
| Stoiana | 62% 7,041 / 11,274 |
|---|---|
| Opponents | 63% 7,153 / 11,314 |
1st-serve points won
| Stoiana | 62% 4,350 / 7,041 |
|---|---|
| Opponents | 59% 4,217 / 7,153 |
Break points converted
| Stoiana | 50% 725 / 1,459 |
|---|---|
| Opponents | 46% 597 / 1,301 |
Break points saved
| Stoiana | 54% 704 / 1,301 |
|---|---|
| Opponents | 50% 734 / 1,459 |
1st-serve points won by season
| Season | Stoiana | Opponents |
|---|---|---|
| 2026 | 62% | 62% |
| 2025 | 60% | 56% |
| 2024 | 60% | 57% |
| 2023 | 65% | 60% |
| Career | 61% | 59% |
Counted from the match statistics we hold, season by season — the cards above are career totals from our data provider, so the two can differ by a few tenths. Seasons with fewer than three matches on record are left out.
Career win–loss by level
| Level | W–L | Win % | Titles |
|---|---|---|---|
| Grand Slam | 0–1 | 0% | 0 |
| WTA 500 | 2–4 | 33% | 0 |
| WTA 250 | 0–1 | 0% | 0 |
| Tour level | 2–6 | 25% | 0 |
| Challenger | 13–7 | 65% | 0 |
| ITF / Futures | 69–35 | 66% | 3 |
Challenger and ITF matches are shown in grey and are not part of the tour-level total.
Season breakdown
Wins and losses in one season, split by round reached, surface, tournament level and opponent ranking band.
2026 season · 43–26 · W–L 62% · 69 matches
Round played
| Qualifying | 17–13 (57%) |
|---|---|
| R128 | 0–2 (0%) |
| R64 | 0–1 (0%) |
| R32 | 12–3 (80%) |
| R16 | 10–2 (83%) |
| SF | 1–3 (25%) |
| F | 0–1 (0%) |
Surface
| Hard | 19–15 (56%) |
|---|---|
| Hard (indoor) | 3–1 (75%) |
| Clay | 13–6 (68%) |
| Grass | 8–4 (67%) |
Tournament level
| Grand Slam | 7–4 (64%) |
|---|---|
| Masters 1000 | 3–4 (43%) |
| Main tour | 4–4 (50%) |
| Challenger | 29–14 (67%) |
Opponent ranked
| vs top 20 | 0–1 (0%) |
|---|---|
| vs top 50 | 0–1 (0%) |
| vs top 100 | 3–7 (30%) |
Rounds are the round each match was played in, not a ladder: a player enters a 32-draw straight in R32, and team events (United Cup, Davis Cup) are not played through a draw at all — those have their own row. Ranking bands use the opponent's ranking on match day and are cumulative: top 100 includes top 10.
Surface record by season
Each cell is one season on one surface: the number is wins–losses, the colour is the win rate. Carpet is counted as indoor hard.
| Season | Hard | Clay | Grass | I.hard | Total |
|---|---|---|---|---|---|
| 2026 | 19–14 | 13–6 | 8–4 | 3–1 | 43–25 |
| 2025 | 28–11 | 2–4 | · | · | 30–15 |
| 2024 | 15–9 | · | · | 3–1 | 18–10 |
| 2023 | 11–7 | · | · | 5–1 | 16–8 |
| 2022 | 2–2 | · | · | · | 2–2 |
| 2020 | 3–2 | · | · | · | 3–2 |
| Career | 78–45 63% | 15–10 60% | 8–4 67% | 11–3 79% | 112–62 64% |
Record at one tournament
Every edition entered: year, best round reached, wins and losses. Most recent first.
W50 Austin · Editions 3 · Record 8–3 · Titles 0
Tournament page →| Year | Best round | W | L |
|---|---|---|---|
| 2025 | Final | 7 | 1 |
| 2024 | Round 1 | 0 | 1 |
| 2023 | Round 2 | 1 | 1 |
Season statistics
Each stat is stored as a value–count pair, so seasons can be added together and the rate is always value ÷ count.
2026 season · 5 games summed across the range
| Stat | Value | Count | Rate |
|---|---|---|---|
| Aces | 8 | 58.5 service games | 0.1 / game |
| Double faults | 18 | 58.5 service games | 0.3 / game |
| 1st serve in | 237 | 375 serve points | 63% |
| 1st-serve points won | 144 | 237 1st serves in | 61% |
| 2nd-serve points won | 57 | 138 2nd serves | 41% |
| Service points won | 201 | 375 serve points | 54% |
| Return points lost | 144 | 378 return points | 38% |
| Break points saved | 26 | 52 faced | 50% |
Value is what happened (aces hit, points won), count is how often it could (service games, points played). Adding seasons adds both — the rate is never averaged from percentages.
More on Umpiry · discovery
More players from United States
All →Frequently asked · Mary StoianaFrequently asked
When was Mary Stoiana born?
Mary Stoiana was born on 6 May 2003 (23 years old).
Where is Mary Stoiana from?
Mary Stoiana is from United States, born in Southbury on 6 May 2003.
How good is Mary Stoiana on hard?
Mary Stoiana's hard-court record stands at 17-16, a 52% win rate.
Cite this
Mary Stoiana is ranked No. 114 in the WTA singles rankings with 666 points. Umpiry, "Mary Stoiana: Ranking, Schedule & Stats", https://umpiry.com/players/mary-stoiana-usa?utm_source=cite (as of 1 October 2026).