Open Extended ReactionsPARIS -- Even when Novak Djokovic won his 100th title in Geneva on the eve of the French Open, few people made him their favorite to win at Roland Garros at age 38. In the second set, Djokovic made 76% of his first serves. Zverev, by contrast, struggled particularly on second serves, winning just 33% in the second set and 20% in the third. Novak Djokovic defeated Alexander Zverev in the quarterfinals on Wednesday at the French Open. Even when the German rallied in the fourth set, Djokovic maintained his focus and level to prevail.