Yoshihito Nishioka defeated Jenson Brooksby 6–4, 5–7, 6–1 in the first round of the ATP 250 Washington tournament on hard court on 21 July 2025, upset the pre-match odds as the underdog. Brooksby entered as the clear favourite at 1.37, with Nishioka priced at 3.31, yet the Japanese player recovered from losing the second set to dominate the decider and secure his place in the next round. The turnaround in the third set proved decisive, with Nishioka's composure under pressure offsetting Brooksby's initial advantage. This victory represents a significant boost to Nishioka's Washington campaign and demonstrates his capacity to overcome seeding expectations on hard courts.