WATCH: American cop gets bizarrely angry with practising tennis stars

“I didn't ask you a question, I'm telling you,” he yelled.

Tennis stars Bernard Tomic And Viktor Troicki incurred the wrath of a US police officer yesterday - by playing tennis.

The pair were practising on court ahead of the Citi Open in Washington DC when they were interrupted by a cop who wanted them to stop due to a risk of bad weather.