S. Kostic: Ranking, Schedule & Stats
S. Kostic is a professional tennis player from Australia, born 16 October 2006.
This page tracks S. Kostic'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.
Ratings & strengths
Umpiry ratings · updated dailyBeyond today · rivals & careerBeyond today
Rivals
Most meetings
Most-played rivals. The record is Kostic's wins–losses across all matches we have, qualifying excluded.
Results
Career
More career statistics
Career serve & return
Absolute totals across the 0 matches we have on record. Green is Kostic, grey is the same stat by the players they faced.
1st-serve points won by season
| Season | Kostic | Opponents |
|---|---|---|
| 2025 | 67% | 75% |
| 2024 | 60% | 71% |
| 2023 | 60% | 78% |
| Career | 62% | 74% |
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 |
|---|---|---|---|
| ITF / Futures | 1–23 | 4% | 0 |
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 · 16–16 · W–L 50% · 32 matches
Round played
| Qualifying | 5–2 (71%) |
|---|---|
| R32 | 0–1 (0%) |
Surface
| Hard | 2–2 (50%) |
|---|---|
| Clay | 9–12 (43%) |
| Grass | 5–2 (71%) |
Tournament level
| ITF / Futures | 16–16 (50%) |
|---|
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 | 2–2 | 9–12 | 5–2 | · | 16–16 |
| 2025 | · | 10–16 | · | · | 10–16 |
| 2024 | 0–2 | 1–12 | · | · | 1–14 |
| 2023 | · | 0–6 | · | · | 0–6 |
| 2022 | · | 0–1 | · | · | 0–1 |
| Career | 2–4 33% | 20–47 30% | 5–2 71% | · | 27–53 34% |
More on Umpiry · discovery
More players from Australia
All →Frequently asked · S. KosticFrequently asked
When was S. Kostic born?
S. Kostic was born on 16 October 2006 (19 years old).
Where is S. Kostic from?
S. Kostic is from Australia.