Djokovic, Nadal win to reach French Open quarterfinals

Rafael Nadal plays a return to Jannik Sinner during their fourth round match on Day 9 of the French Open tennis tournament at Roland Garros in Paris, France, on Monday, June 7, 2021. (AP Photo/Christophe Ena)

PARIS — For two sets and more than two hours at the French Open on Monday, Novak Djokovic found himself being outplayed by a 19-year-old opponent from Italy making his Grand Slam debut.