Zverev's stock is rising for the French Open amid questions over Djokovic, Nadal, Sinner and Alcaraz

Top-ranked Novak Djokovic hasn't won a tournament all year. Record 14-time French Open champion Rafael Nadal has been far from his best. Jannik Sinner and Carlos Alcaraz have been out injured. And Daniil Medvedev has won only one clay-court title in his career.