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Rei Sakamoto defeated Aleksandar Vukic 6-4, 6(5)-7(7), 6-4, 3-6, 6-4 — US Open 2026 R128.
Aleksandar Vukic and Rei Sakamoto: Rei Sakamoto leads 1–0 across 1 recorded meeting.
Two break points in the entire match, both converted, and the 30-year-old Australian is gone from the US Open in the opening round. Vukic won just two of his 25 return games against a serve that produced 38 aces, while Sakamoto — 157th in the ATP rankings, yet a 59 percent favorite with the betting market — out-hit him 74 winners to 50. The deciding set needed one swing, a break in game 1 for 1-0, and the Sydneysider never saw another break point after it. Sakamoto, 20 and out of Nagoya, moves into the second round with his second tour-level win on record this season; the first came in Miami in March.