There's a full-blown epidemic in the world of sport—a growing number of prominent athletes are lending credence to an absolutely nonsense "theory" that the Earth is flat.
The face of this hogwash is Celtics All-Star Kyrie Irving, who made headlines last season when he said he believed the Earth is flat on Richard Jefferson and Channing Frye's podcast last season. (He's since been pretty wishy-washy about whether he actually believes it and said it was a "social experiment." Of course.)
A couple other athletes have voice support for this demonstrably false notion. Irving's teammate Jaylen Brown said he was leaning toward the flat-Earth camp, and so is Rams wide receiver Sammy Watkins.