On Thursday, it was announced that two-time Wimbledon champion Alcaraz had joined the British player in becoming a global tennis ambassador for Evian. He said he was “honoured” by the new deal, and championed the brand’s influence on his own hydration routines.

The theory that the BBC described as “melting tennis social media last week” came about after the U.S. Open announced the mixed doubles pairs — which also includes the all-American pair of old friends Madison Keys and Frances Tiafoe and current tennis couple Stefanos Tsitsipas and Paula Badosa — on June 17.