Tallon Griek Tim van de Zandschulp upset Italian Matteo Berrettini in the quarterfinals of the Rakuten Japan Open Tennis Championships on Thursday. Van de Zandschulp, ranked 68th in the world, defeated the sixth-seeded Berrettini 6-4, 6-4. The win marks Van de Zandschulp’s first victory over a top-10 player. The semifinals of the tournament will be held on Friday.