It’s a wild win for João Souza…

The 25-year-old professional tennis player, a wild-card at the Brazil Open, claimed an upset 7-5, 6-4 win over fifth-seeded Robin Haase on Monday in the first round of the clay-court tournament.

Souza broke Haase late in each set, serving to close out the match for his first win of the year.

Haase, ranked 45th, had four chances to break the Brazilian’s serve, but couldn’t capitalize on any of them.

It’s the biggest career win for Souza, who is currently ranked No. 129 in the world.

Souza had previously lost to Haase last July at the Crédit Agricole Suisse Open Gstaad in Switzerland.