Croatia won the 2018 Davis Cup, the last to be played in the original format. (AP)

Team events have gone through an evolution on the ATP Tour. First, fans saw the creation of the Laver Cup, a tournament created by Roger Federer pitting Team Europe against Team World. Then the Davis Cup announced drastic changes starting in 2019, only for the ATP to announce their own team event, the ATP World Team Cup, for 2020. 

The Davis Cup changes and the World Team Cup have been met with criticism and cautious optimism from players, officials and fans. What do you think about all this team innovation?