SINGAPORE, September 22, 2026: Tatiana Prozorova produced the strongest comeback of the Singapore Tennis Open’s second day so far, recovering from a set and 4-2 down to defeat Sofia Costoulas 5-7, 7-6(2), 6-2 in a draining first-round contest on Court 1.
For much of the first two sets, Costoulas appeared to have control. The Belgian took the opener 7-5 and moved ahead 4-2 in the second, leaving Prozorova two games from elimination.
The match turned from there.
Prozorova forced the second set into a tiebreak, won it 7-2 and then separated herself decisively in the final set. After spending most of the afternoon trying to stay in the tournament, she closed the match with a 6-2 third set and advanced to the second round.
Story at a glance
Prozorova vs Costoulas: Singapore Result at a Glance
The official WTA match listing identifies Prozorova and Costoulas as a Round of 32 matchup on Court 1 at the WTA 500 event.
How Did Tatiana Prozorova Escape From 7-5, 4-2 Down?
The important part of this match was not simply that it went three sets. Prozorova had reached a point where another short run from Costoulas could have ended her tournament.
The Third Set Showed How Completely the Match Had Changed
A comeback can still fail after the initial escape. Players frequently expend enormous physical and emotional energy saving a second set, only to struggle to reset when the deciding set begins.
Prozorova and Costoulas Keep Taking Each Other to Three Sets
The history between these two players makes Tuesday’s recovery more interesting.
Singapore Was a Step Up in Tournament Level for This Rivalry
The setting also changed.
The result also continued a remarkably competitive rivalry. All three career meetings between Prozorova and Costoulas have now gone three sets, with Prozorova moving 2-1 ahead in their head-to-head.
Prozorova vs Costoulas: Singapore Result at a Glance
| Detail | Result |
|---|---|
| Winner | Tatiana Prozorova |
| Loser | Sofia Costoulas |
| Score | 5-7, 7-6(2), 6-2 |
| Round | Round of 32 |
| Surface | Indoor hard |
| Prozorova ranking | World No. 180 |
| Costoulas ranking | World No. 152 |
| Second-set deficit | Prozorova trailed 4-2 |
| Updated head-to-head | Prozorova leads 2-1 |
| Venue | Singapore |
The official WTA match listing identifies Prozorova and Costoulas as a Round of 32 matchup on Court 1 at the WTA 500 event.
How Did Tatiana Prozorova Escape From 7-5, 4-2 Down?
The important part of this match was not simply that it went three sets. Prozorova had reached a point where another short run from Costoulas could have ended her tournament.
Costoulas had already done the difficult work of taking a competitive first set 7-5. When she established a 4-2 advantage in the second, Prozorova was chasing the match rather than controlling it.
What followed required a different kind of performance from the Russian.
She first had to stop the match from moving further away. That meant holding together service games and extending return games long enough to prevent Costoulas from reaching the finish line while she still had momentum.
Prozorova eventually pulled the set back to 6-6.
The tiebreak changed the emotional balance completely. Instead of merely surviving it, Prozorova won 7-2, turning a match she had been close to losing into a one-set contest.
Costoulas never regained the same control in the decider.
The Third Set Showed How Completely the Match Had Changed
A comeback can still fail after the initial escape. Players frequently expend enormous physical and emotional energy saving a second set, only to struggle to reset when the deciding set begins.
Prozorova avoided that problem.
Her 6-2 final set was the most convincing set either player produced. The player who had spent the middle of the match under pressure was suddenly the one creating separation.
That progression gives the match its human-performance value. Prozorova did not simply benefit from one poor service game or scrape through a single tiebreak. She survived the dangerous phase and then found enough control to make the deciding set significantly less complicated.
It also adds another compelling storyline to a Singapore tournament already producing very different types of victories. Maja Chwalinska needed only 79 minutes to beat Rebecca Sramkova on opening day, while Prozorova had to solve a much longer competitive problem.
Prozorova and Costoulas Keep Taking Each Other to Three Sets
The history between these two players makes Tuesday’s recovery more interesting.
This was their third meeting, and none has ended in straight sets.
| Tournament | Winner | Score |
|---|---|---|
| Dubai W100, 2024 | Sofia Costoulas | 4-6, 7-5, 6-2 |
| Manila WTA 125, 2026 | Tatiana Prozorova | 4-6, 6-2, 6-4 |
| Singapore WTA 500, 2026 | Tatiana Prozorova | 5-7, 7-6(2), 6-2 |
The pattern is unusually consistent.
Costoulas won the first set in Manila before Prozorova recovered. She again won the opening set in Singapore, and this time came within two games of converting that advantage before Prozorova reversed the match.
Their first meeting in Dubai went the other way. Prozorova took the opening set before Costoulas came back to win.
Three meetings have therefore produced three first-set winners who failed to close the match.
Singapore Was a Step Up in Tournament Level for This Rivalry
The setting also changed.
Their 2024 encounter came on the ITF circuit. The January rematch was a WTA 125 quarterfinal in Manila. Singapore brought the rivalry into a WTA 500 main draw.
The WTA’s official Singapore guide confirms that the tournament carries 500 ranking points for the champion and a prize pool of approximately $1.206 million.
Both players were late additions to the Singapore field. The WTA listed Prozorova and Costoulas among the players who moved into the tournament after withdrawals altered the original entry list.
That opportunity now matters more to Prozorova.
At world No. 180, every main-draw victory at this level offers ranking value and exposure that is difficult to replicate on the lower circuits where much of her career has been built.
Who Is Tatiana Prozorova?
Prozorova is 22 and entered Singapore ranked No. 180.
Her official WTA profile lists a career-high singles ranking of No. 140 and shows a 27-15 record during the 2026 season entering this week.
Her path has largely developed through ITF and WTA 125 competition rather than through immediate success at the highest level.
She reached her first WTA 125 semifinal in Palermo in 2025 and ended that season inside the Top 200 for the first time. Her Grand Slam main-draw experience remains limited, with her first appearance coming as a qualifier at the 2023 US Open.
Singapore therefore offers a different test. A WTA 500 rewards players who can translate success from lower-tier events into wins against deeper tour-level fields.
Costoulas Entered as the Higher-Ranked Player
Costoulas was ranked No. 152, giving her a meaningful but hardly overwhelming ranking advantage over No. 180 Prozorova.
She is also younger. The Belgian was born in April 2005, while Prozorova was born in October 2003.
The ranking gap did not make Tuesday’s result a major upset. The match history already showed how closely matched they were.
What stood out was the position from which Prozorova recovered.
That separates this result from TSE’s broader tennis coverage of ranking upsets. The Singapore match was primarily about momentum, resistance and the ability to reconstruct a match after the original plan had stopped working.
Day 2 Has Already Produced Several Different Singapore Stories
Prozorova’s comeback belongs naturally within the broader story of the tournament’s second day.
Wang Xinyu produced the day’s most emphatic completed upset by beating No. 8 seed Donna Vekic 6-1, 6-2. That match lasted barely more than an hour and never developed into a prolonged contest.
Prozorova-Costoulas occupied the opposite end of the spectrum.
One match was decided through immediate superiority. The other required recovery after the eventual winner had spent much of the first two sets behind.
Singapore’s draw has also been altered away from the court. Amanda Anisimova withdrew before playing her first match, removing the No. 2 seed from the tournament.
Those developments make Day 2 more valuable as a consolidated narrative than a collection of isolated score reports. The day has already produced a seeded exit, a major comeback and another significant withdrawal.
The tournament follows a 2026 women’s season in which draw volatility has repeatedly created opportunities. TSE tracked similar movement during the National Bank Open, where early exits repeatedly changed the shape of the field.
Why Long Matches Matter During a WTA 500 Week
Prozorova’s comeback carries a cost that Wang’s victory over Vekic did not.
Three-set matches place additional demands on recovery, particularly when the next round arrives quickly. The emotional load can matter as much as the physical one when a player has spent much of a match facing elimination.
That becomes part of the next-round equation.
Wang left her first match after conceding three games. Prozorova had to negotiate three sets and a tiebreak. Both advanced, but their routes into the next round could hardly have been more different.
Late-season scheduling adds another layer. Singapore begins an important Asian stretch before Beijing and Wuhan, so players are balancing immediate tournament opportunity against accumulated fatigue from a long season.
TSE’s Upcoming Sports Encounters calendar tracks those major events as the tour moves deeper into its Asian Swing.
Prozorova’s 2026 Season Has Been Built on Matches Like This
The Russian’s season has not been defined by major WTA trophies.
Her progress has come through accumulation: wins on hard courts, WTA 125 runs and opportunities to move into larger draws when they become available.
Her WTA profile lists 27 victories against 15 defeats in 2026 before Singapore, with her strongest tour-level results still developing.
The Manila victory over Costoulas is useful in that context. Prozorova lost the first set there as well before recovering 4-6, 6-2, 6-4.
Eight months later, the same opponent presented a similar problem on a bigger stage.
Prozorova solved it again.
Singapore’s Upgraded Status Makes Early-Round Wins More Valuable
Singapore returned to the WTA calendar as a 250-level tournament in 2025 and moved to WTA 500 status for 2026.
That upgrade changes the competitive and financial value of matches that might otherwise look like ordinary first-round encounters.
The WTA awards 60 ranking points and $18,045 to a player reaching the second round in Singapore, compared with one ranking point and $13,005 for a first-round exit.
For a player ranked outside the Top 150, those differences matter.
The tournament’s stronger status is also why the opening rounds have attracted such scrutiny. Chwalinska’s opening victory carried additional significance because the fifth seed is trying to consolidate a breakthrough season rather than merely collect another early-round win.
Prozorova’s objectives are different. She is trying to turn opportunities at this level into the results required to reach them more regularly.
Why This Match Belongs in the Day 2 Lead Package
The score alone does not make Prozorova-Costoulas the largest result of Tuesday.
Wang’s destruction of a seeded Vekic carries more immediate draw consequence, while Anisimova’s withdrawal removes one of the tournament’s biggest names entirely.
Prozorova provides the day’s strongest comeback narrative.
She was a set down. She was 4-2 down in the second. Costoulas had already demonstrated twice before that she could take Prozorova deep into a deciding set.
The Russian still found a way to reverse the match and then control the third set.
That gives a consolidated Singapore report three complementary leads: the upset, the withdrawal and the comeback.
For readers following the wider women’s tour, The Sports Encounter Tennis Hub brings those tournament narratives together rather than treating every result as an isolated score.
What Does the Win Tell Us About Prozorova?
One first-round victory cannot establish that Prozorova is ready for a permanent move into the upper levels of the WTA rankings.
It can demonstrate a competitive quality that becomes useful when margins tighten.
She has now faced Costoulas three times. Every match has required a deciding set. Twice this year, Prozorova has lost the opening set and still beaten her.
Singapore adds the most difficult recovery of the three.
The next round will provide a different measurement. Prozorova has survived. Now she has to recover quickly enough to make the escape useful.
Continue the Tennis Story
Frequently Asked Questions About Prozorova vs Costoulas
Who won Tatiana Prozorova vs Sofia Costoulas in Singapore?
Tatiana Prozorova won the first-round match 5-7, 7-6(2), 6-2.
How far behind was Prozorova against Costoulas?
Prozorova lost the opening set 7-5 and trailed 4-2 in the second before recovering.
What was the second-set tiebreak score?
Current completed-result data records Prozorova winning the second-set tiebreak 7-2, making the set score 7-6(2).
What is the Prozorova vs Costoulas head-to-head?
Prozorova now leads their career series 2-1.
Have all their matches gone three sets?
Yes. All three meetings between Prozorova and Costoulas have required deciding sets.
What is Tatiana Prozorova’s ranking?
Prozorova entered Singapore ranked world No. 180.
What is Sofia Costoulas’ ranking?
Costoulas entered the tournament ranked world No. 152.
Is the Singapore Tennis Open a WTA 500 tournament?
Yes. The tournament is a WTA 500 event played on indoor hard courts in Singapore.
How many ranking points does a Singapore second-round appearance earn?
The WTA tournament guide lists 60 ranking points for reaching the second round.
Why is Prozorova’s win significant?
The result gives Prozorova a WTA 500 main-draw victory after she recovered from a set and 4-2 down against a higher-ranked opponent who had already taken her to three sets twice previously.
