Novak Djokovic beat Rafael Nadal in the 2013 Monte-Carlo final, ending Nadal’s 46-match winning streak at the event.
Djokovic won the final 6–2, 7–6 (7–1), defeating the eight-time defending champion on Monte Carlo’s clay courts. Nadal had dominated the tournament for nearly a decade, making the result one of the most important interruptions to his clay-court reign.
The final was also a rematch of the previous year’s Monte-Carlo championship match, which Nadal had won. Djokovic’s victory became the first defeat Nadal suffered at the event since his debut title run, and it ended the longest winning streak at a single tournament in tennis history.
The other options were connected with the same draw but not the final: Jo-Wilfried Tsonga lost in the semifinals, Tomáš Berdych exited in the third round, and David Ferrer was not the runner-up. Nadal is the canonical answer.