Roger Federer returns to Roland Garros for the first time since 2015 — and a decade after he completed the career Grand Slam by winning his only trophy there. Rafael Nadal seeks a record-extending — and hard-to-fathom — 12th title in Paris. Novak Djokovic bids to win his fourth major championship in a row for the second time in his career, something neither of his two great rivals ever did even once.
