Matteo Arnaldi vs Rei Sakamoto Preview & Prediction | 2026 Japan Open | First Round

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Matteo Arnaldi meets Rei Sakamoto in the first round at the 2026 Japan Open at the Ariake Coliseum in Tokyo, Japan

Ranking points: ATP 500

Start date/time: 30 September 2026 at 9:20 am

Venue: Ariake Coliseum, Tokyo, Japan

Surface: Outdoor hard

How to watch on TV: UK – Sky Sports Tennis / USA – Tennis Channel

How to watch online: UK – Sky Go / USA – Tennis Channel

Tickets: Visit this link for the latest Matteo Arnaldi vs Rei Sakamoto ticket information

Matteo Arnaldi vs Rei Sakamoto prediction

Matteo Arnaldi will hope to end a poor run when he faces Rei Sakamoto in Tokyo.

The Italian has lost his last three and won just two of his previous nine matches, but he does hold a 1-0 head-to-head advantage over the wildcard, Sakamoto.

That triumph came in Shanghai via a 7-6 6-4 scoreline last year and with 100 places currently between them in the rankings, he will be confident of securing a similar outcome here.

Sakamoto has found wins hard to come by with just three in main draws so far in 2026. The 20-year-old underdog will want to make an impression on home turf and could push Arnaldi hard again, so a decent swell of games could be a shrewd bet.

Matteo Arnaldi vs Rei Sakamoto tip: Over 20.5 games