Professional tennis may be suspended due to the pandemic, but tennis stars are not shying competing with each other even though it is on social media. As Nick Kyrgios turned 25 on Monday, his sometimes doubles partner Stefanos Tsitsipas sent him an unwelcomed gift on Instagram. The world number 6 played a birthday prank on Kyrgios by posting a picture in which he can be seen holding up a cardboard sign that said Call me and listed a cell phone number. Thinking that it was Tsitsipas' number, fans started calling him up only to find out that the number was switched off. It was later known that the contact happened to be Kyrgios' personal number who has also asked his fans to stop calling him.