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Sports · US Open 2026 · Women's Singles · Round of 128
Kimberly Birrell vs Petra Marcinko — 3-6 7-6(4) 6-3
 Kimberly Birrell✓ | 3 | 7 | 6 |
 Petra Marcinko | 6 | 64 | 3 |
Final · Monday, August 31, 2026 · Round of 128
Result
Birrell saved a match point in the twelfth game of the second set on Sunday night, went into the tiebreak a mini-break behind, and came back on Monday after a fourteen-hour rain delay to finish it. She won 102 points to Marcinko's 105 and converted seven of her eight break points, which is how that arithmetic works; between them they served 23 double faults. Marcinko hit 38 winners to 24 and 53 unforced errors to 40. Two hours 31 minutes of play. It is Birrell's first US Open main-draw win at the fourth attempt, and it puts her into a second round against Ekaterina Alexandrova.
Kimberly BirrellRows the source hadn’t published are left off rather than guessed.
At this Stage
Round of 128 as a season-long conversation's third chapter: Birrell and Marcinko split their 2026 meetings a surface apart, and the rubber match lands on the court that suits the veteran. The winner gets 18th-seeded Alexandrova or the American Kessler in the Round of 64 — a genuinely open corner of a quarter that formally reports to third-seeded Pegula. Sunday through Tuesday.
What we know now
Court: Court 13
Match length: 2:31
Watch: ESPN · ESPN2 · ABC · ESPN app
What I said beforehand
The preview, frozen before the first serve. Clearly dated, never rewritten — that's the deal that makes the pick worth anything.
Birrell, in this year's rare rubber match between near-equals. They split two meetings this season — Marcinko cruised on Eastbourne grass, Birrell came back from a 0-6 first set to win in Austin on hard — and the surface schedule favors the Australian's version: her 81–78 career hard-court record dwarfs the 20-year-old's 8–17, and her flat, compact returning game is built for American acrylic. Marcinko's upside is obvious (a former junior No. 1-adjacent pedigree and a first-strike game that won this year's grass meeting easily), and at 20 her ceiling is the higher one; a US Open debut is a strange place to prove it against an opponent who has already solved her once on this surface. Birrell in three.
The case for Kimberly Birrell
60% to winBirrell won the hard-court meeting this season — from a set down, which tells you who adjusted — and owns ten times Marcinko's surface experience. At 28 with an even season against tour fields, she is the known quantity in exactly the conditions where known quantities cash.
The case for Petra Marcinko
40% to winMarcinko dismantled Birrell 6-1 6-4 the last time they played, and her power-first game has been growing into tour results all season. At 20, with the bigger serve and nothing to defend, a debut in New York is an amplifier, not a burden — the Austin loss was her lesson, not her pattern.
Both cases written 2026-08-28, before the first ball — frozen into the record exactly as written, whatever the result. The percentages are mine — opinions with a percent sign on. They add to 100 because tennis has no draw to hide the rounding in.
My locked pick: Kimberly Birrell to advance ✓ RIGHT
“Won this season's hard-court meeting and owns ten times the surface mileage — the decider lands on her court.”
Locked 2026-08-28 05:00 UTC — rendered verbatim from the pick ledger; never a fresher, hedged version
Tale of the tape
Kimberly BirrellPetra MarcinkoPlayer vitals: US Open official player feed (usopen.org) and Tennis Abstract career match logs · as of 2026-08-28.
Career head-to-head: Tennis Abstract career match logs (tour-level) · as of 2026-08-27.
Storylines
- They split two meetings this season: Birrell from 0-6 down in Austin on hard, Marcinko 6-1 6-4 at Eastbourne on grass — Sunday is the decider.
- Marcinko, 20, is making her US Open main-draw debut; her 8–17 career hard-court record is the number her game has to outgrow.
- Birrell is one of the Australian contingent threaded through this draw — chasing her first US Open main-draw win after last year's first-round exit.
Head to head
One–one, both this season: Birrell 0-6 6-3 6-4 in Austin on hard courts; Marcinko 6-1 6-4 at Eastbourne on grass. Same year, opposite surfaces, opposite answers — New York votes with Austin.
Source: Tennis Abstract career match logs (tour-level) · as of 2026-08-27.
Court & schedule: Court 13, Monday 31 August. The US Open posts each day's order of play the evening before; this one is on the board. (Official US Open order of play, as of 2026-08-30)
Weather: Sunday — the men's final, and the last match of the fortnight — was forecast at 78°F with showers and thunderstorms 95% likely, the wettest day of the two weeks and the one day that could not be pushed back. The rain came in the morning and stopped before the final, which Ashe played with its roof open. It cleared from there: 15% overnight, 15% Monday, then dry and sunny. (National Weather Service New York forecast, as of 2026-09-13)
Venue: USTA Billie Jean King National Tennis Center, Flushing Meadows, New York — hard.