Friday 22 July 2016 13:14, UK
Bernard Tomic and Viktor Troicki were confronted by a police officer after they ignored his orders to stop a practice session in Washington.
Australia's Tomic and Serbian player Troicki had been practicing at this week's Citi Open when they were told to leave the court due to the threat of rain.
The pair did not immediately stop playing, but had to cut short their session after a police officer walked onto the court.
Tomic and Troicki both voiced their complaints as rain was yet to fall, although they eventually made way following a more forceful request from the officer.
After the premature end to his preparations, Tomic suffered a straights-sets defeat to Ivo Karlovic in the third round of the tournament.
Play the video at the top of the page to see how Tomic and Troicki were ordered off court by a police officer.
Watch live action from the Citi Open on Friday, starting at 6pm on Sky Sports 5.
