Defending champion Rafael Nadal beat German qualifier Yannick Hanfmann in straight sets to reach the French Open second round.
The second seed, chasing a record-extending 12th Roland Garros title, beat the world number 180 6-2 6-1 6-3.
After saving four break points in the first game, 17-time Grand Slam winner Nadal dominated throughout.
The 32-year-old won his first title since August at the Italian Open earlier in May.
Nadal will face German qualifier Yannick Maden in the second round.
Despite dominating clay-court tournaments in the build-up to the French Open in previous years, the win in Rome was Nadal's only 2019 final on the red dirt.