João Fonseca (tennis)
Singles: 1 (title)
<table><thead><tr><th>Result</th><th> Date </th><th>Tournament</th><th>Surface</th><th>Opponent</th><th>Score</th></tr></thead><tbody><tr><td>Win</td><td>Dec 2024</td><td>Next Generation ATP Finals, Saudi Arabia</td><td>Hard (i)</td><td>Learner Tien</td><td>2–4, 4–3(10–8), 4–0, 4–2</td></tr></tbody></table>
Singles: 4 (3 titles, 1 runner-up)
<table><thead><tr><th>Legend</th></tr></thead><tbody><tr><td>ATP Challenger Tour (3–1)</td></tr><tr><td>Finals by surface</td></tr><tr><td>Hard (3–0)</td></tr><tr><td>Clay (0–1)</td></tr></tbody></table>
Singles: 4 (3 titles, 1 runner-up)
<table><thead><tr><th>Result</th><th>W–L</th><th> Date </th><th>Tournament</th><th>Tier</th><th>Surface</th><th>Opponent</th><th>Score</th></tr></thead><tbody><tr><td>Loss</td><td>0–1</td><td>Mar 2024</td><td>Paraguay Open, Paraguay</td><td>Challenger</td><td>Clay</td><td>Gustavo Heide</td><td>5–7, 7–6(8–6), 1–6</td></tr><tr><td>Win</td><td>1–1</td><td>Jul 2024</td><td>Lexington Challenger, US</td><td>Challenger</td><td>Hard</td><td>Li Tu</td><td>6–1, 6–4</td></tr><tr><td>Win</td><td>2–1</td><td>Jan 2025</td><td>Canberra Tennis International, Australia</td><td>Challenger</td><td>Hard</td><td>Ethan Quinn</td><td>6–4, 6–4</td></tr><tr><td>Win</td><td>3–1</td><td>Mar 2025</td><td>Arizona Tennis Classic, US</td><td>Challenger</td><td>Hard</td><td>Alexander Bublik</td><td>7–6(7–5), 7–6(7–0)</td></tr></tbody></table>