PARIS — Rafael Nadal lost in the first round of the French Open to Alexander Zverev 6-3, 7-6 (5), 6-3 on Monday in what might turn out to be the 14-time Roland Garros champion’s last match at his favorite tournament.

It is the first time in his long and illustrious career that Nadal has been beaten in two consecutive matches on clay courts and the first time he has dropped a match earlier than the fourth round at the French Open. His career record at the clay-court Grand Slam tournament is now 112-4.

The match was played with the retractable roof shut at Court Philippe Chatrier on Monday, and the loud cheers for Nadal from most in the capacity crowd of about 15,000 echoed throughout.