Casper Ruud defeated Hugo Dellien in the quarter-final of the ATP 250 São Paulo tournament on clay, winning decisively 6–1, 6–1. As the pre-match favourite with odds of 1.54, Ruud delivered a commanding performance that justified his status, dismantling the Bolivian opponent with a double bagel. Dellien, at 2.7 odds, offered minimal resistance on the surface. The dominant victory represents a significant step forward for Ruud in São Paulo, positioning him well for the semi-final stage of the tournament.