Answer
Rafael Nadal, the 21-time Grand Slam champion, fell to Tommy Paul in the semifinals of the 2023 BNP Paribas Open. Paul, ranked 19th in the world, played aggressively and took advantage of Nadal's recent injury struggles. Nadal, who had been dealing with a hip injury, was unable to match Paul's intensity and consistency. Paul's victory marks his first Masters 1000 final appearance.