Novak Djokovic's quest for a record 25th Grand Slam title came to a stunning halt Friday at the French Open, as 19-year-old Brazilian qualifier Joao Fonseca defeated the third seed 4-6, 4-6, 6-3, 7-5, 7-5 in a third-round epic lasting nearly five hours on Court Philippe Chatrier.

Fonseca, ranked outside the top 100, became the first teenager to beat Djokovic in a major. The Serb, who turned 39 last week, looked in control early, taking the first two sets. But Fonseca roared back, breaking Djokovic early in the fourth and leveling the match with aggressive baseline play.

In the decisive fifth set, Djokovic went up 3-1, but Fonseca broke back, held his nerve through 5-5, and then broke again for a 6-5 lead. Serving for the match, the Brazilian fired three straight aces to close out the biggest win of his career.

Djokovic’s loss, combined with Jannik Sinner’s earlier exit, opens the draw in Paris. Fonseca will face [opponent name] in the fourth round, now a genuine contender for his first major crown.