Roman Safiullin defeated Matteo Arnaldi 7-6 6-2 in the Brisbane quarter-final on hard. The upset overturned the form book — Matteo Arnaldi came in ranked #38, but Roman Safiullin had been the form player, winning 6 of their last 8 on hard.
Safiullin R. took it in straight sets.
Safiullin R. and Arnaldi M. faced 10 of the same opponents in the last 12 months. Safiullin R. went 7–5 (58%) against them, Arnaldi M. 6–5 (55%). Results against comparable opponents are close (5 : 3 better-results split).
Roman Safiullin beat Matteo Arnaldi 7-6 6-2. Umpiry, "Roman Safiullin vs Matteo Arnaldi — Brisbane Quarter-final", https://umpiry.com/match/2024-01-01/arnaldi-vs-safiullin-brisbane-qf?utm_source=cite (as of 1 January 2024).