Novak Djokovic breaks down in tears during surprise US Open first round defeat
Tennis great Novak Djokovic broke down on court during his shock defeat to Argentina's Mariano Navone in the US Open first round at the USTA Billie Jean King National Tennis Center in Flushing Meadows. The 39-year-old could not keep his emotions at bay, with tears flowing during the deciding set of a dramatic match.

TL;DR
- Novak Djokovic suffered a surprising first-round defeat at the US Open.
- He became emotional and cried on court during the match.
- Djokovic cited a recurring "health condition" involving vomiting and body collapse as the reason for his poor performance.
- This is Djokovic's first opening-round Grand Slam loss since 2006.