The ATP tour’s stars are having a blast in Portugal.

Stefanos Tsitsipas, Pablo Carreno Busta, Alex De Minaur, Joao Sousa and more have made the most of their time in Estoril this week. According to Tsitsipas, this tournament has “really nice vibes, really good energy.”

The players shared their excitement at the Millenium Open player party.

Tsitsipas and Carreno Busta tested their balance and hand-eye coordination in a fun game of E-Bike tennis.

If that’s not enough, the 19-year old Greek used angles and perspective to his advantage while pretending to be a tennis ball bouncing on his racquet next to the Atlantic Ocean.

Tsitsipas is the top seed at the ATP 250 and starts on Wednesday, while De Minaur and Carrreno Busta both lost their first round matches. Carreno Busta is into the second round and plays on Thursday. 

Follow Cale on Twitter: @Cale_Hammond