Who is Mariano Navone, the Argentine who stunned Novak Djokovic?

Mariano Navone might have won his first ATP Tour title in April 2026 and defeated the likes of Felix Auger-Aliassime and Casper Ruud, but not many would have backed him to beat 24-time Grand Slam champion Novak Djokovic in the first round of the 2026 US Open. Navone staged a massive upset in New York, handing fourth-seeded Djokovic his first opening-round loss at Flushing Meadows, where the Serbian was making his 20th appearance and had...