Which major title was called Nadal's 'La Décima' in 2017?

The major title called Nadal’s “La Décima” in 2017 was the French Open. Nadal won his 10th Roland-Garros men’s singles title by defeating Stan Wawrinka 6–2, 6–3, 6–1 in the final.

“La Décima” means “the tenth” in Spanish. The phrase highlighted Nadal’s unprecedented dominance in Paris: he became the first man in the Open Era to win the same Grand Slam singles tournament 10 times. His earlier French Open victories came from 2005 through 2014, with the 2017 title ending a three-year gap.

The 2017 triumph was especially emphatic because Nadal did not lose a set throughout the tournament. It was also his 15th major title overall at the time. The nickname can cause confusion because Nadal also won his 10th titles at Monte Carlo and Barcelona in 2017, but in major-title trivia, “La Décima” most specifically refers to his 10th French Open crown.