Did We Just Witness the End for Novak Djokovic?

There are losses, and then there are moments that feel like a chapter closing. Novak Djokovic’s stunning first-round exit at the U.S. Open felt like the latter. The 24-time Grand Slam champion was beaten by Mariano Navone 7-6, 5-7, 4-6, 6-2, 6-1 Sunday night in a four-hour, 36-mi