 Takes on the defending champion, Carlos Alcaraz, who beat Djokovic in the final last year. Djokovic won it two years ago. Olympic tune-up in women's soccer. United States beating Mexico 1-0 in New Jersey. I'm Frank Hanrahan, WTOP Sports. Coming up after traffic and weather, more information from Butler, Pennsylvania, where former President Donald Trump was injured during what is being investigated as an assassination attempt.