The Laver Cup is a three-day tournament named in honor of Australian tennis legend Rod Laver, the only man to win two calendar-year Grand Slams and one of the greatest players of all time. The event showcases tennis superstars competing on the same team, playing singles, pairing up in doubles and cheering each other on from the sidelines.
Link: https://www.usta.com/en/home/pro/pro-media—news/laver-cup-to-be-held-annually-starting-in-2020.html