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Sports · US Open 2026 · Men's Singles · Round of 128
Ignacio Buse vs Marcos Giron — 3-6 6-3 6-3 6-7(6) 6-1
 Ignacio Buse✓ | 3 | 6 | 6 | 66 | 6 |
 Marcos Giron | 6 | 3 | 3 | 7 | 1 |
Final · Wednesday, September 2, 2026 · Round of 128
Result
Washed out on Tuesday without a ball struck, the match was replayed on Wednesday on Court 6, and Giron took the opening set 6-3 in 49 minutes. Buse, the 32nd seed, broke early in the second for 3-0 and took that set and the third by identical 6-3 scores. Giron forced a fifth by edging the fourth-set tiebreak 8-6, then won only one game in the decider; Buse closed it out after 3hr 48min, dropping his racquet on the cement and opening his arms to a largely Peruvian crowd. It was his first US Open main-draw win. The tournament noted that his grandfather Eduardo was the last Buse to win a match here, in 1958, and he became only the third Peruvian to do so this century, after Luis Horna and Juan Pablo Varillas. His uncle, the chef Gastón Acurio, watched from the stands. Buse arrived as the newly minted world No. 30, three days after winning Winston-Salem; he had also beaten Giron from a set down at Queen's in June.
Ignacio BuseRows the source hadn’t published are left off rather than guessed.
At this Stage
Round of 128, where seedings meet surfaces: Buse's 32 protects him from other seeds, but not from a 33-year-old American with fifteen times his hard-court mileage and a home crowd. This is the version of a first-round upset that the numbers half-endorse before a ball is struck. The winner draws Molcan or Bonzi in a Round of 64 with no heavyweight in sight — this eighth's seed is the man who might lose right here. Sunday to Tuesday, $140,000 to the loser.
What we know now
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.
Giron, against the seeding and with the data's blessing. Buse wears the 32 next to his name off a fine 24–19 season, but the fine print is loud: the Peruvian's career hard-court record is 9–10, his ranking was built on clay, and his lone US Open main draw ended in the first round last year. Giron is 33 and his season is under .500, but he owns 140 career hard-court wins, plays his best tennis at home Slams, and pushed decade-younger legs to a third-set tiebreak in their only meeting — on grass, Buse's other weak surface, which the Peruvian still needed 7-6(8) in the third to take. On a quick court in New York, the American's flat pace and experience profile as the better fit. Upset pick, moderately held.
The case for Ignacio Buse
44% to winBuse is seeded because he wins matches — 24 of them this season — and at 22 his athletic ceiling simply outruns a 33-year-old's. He won the only meeting, saving the biggest points of a third-set tiebreak, and seeds get draws like this precisely so they can learn hard courts on the job. The serve that held up at Queen's holds up here.
The case for Marcos Giron
56% to winGiron has spent a decade doing exactly this: beating clay-court seeds on American hard courts with early, flat ball-striking and a first-step quickness that has aged well. His 140 career hard-court wins are fifteen times Buse's nine, the Queen's meeting was a coin-flip he nearly took, and the US Open crowd has lifted his level every year of his career.
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: Marcos Giron to advance ✗ WRONG
“A 140-to-9 hard-court experience edge over a clay-seeded 22-year-old, at his home major — the mild upset the surface argues for.”
Locked 2026-08-28 02:55 UTC — rendered verbatim from the pick ledger; never a fresher, hedged version
Tale of the tape
Ignacio BuseMarcos GironPlayer 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
- Buse's 32nd seeding rests on a clay-built season: his career tour-level hard-court record is 9–10, the thinnest of any men's seed.
- Giron won a US Open main-draw match in each of the last several editions on his home Slam's courts — his 140 career hard-court wins lead this section.
- The only meeting, at Queen's Club in June, went to Buse 3-6 7-5 7-6(8) — three points from Giron's win.
Head to head
Buse leads 1–0 from Queen's Club this June — a grass three-setter that turned on a 10-8 finish in the deciding tiebreak. It told us the matchup is close on a fast court; it did not tell us who wins the New York version.
Source: Tennis Abstract career match logs (tour-level) · as of 2026-08-27.
Court & schedule: Court 6, Wednesday 2 September. 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 2026-09-02)
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.