For sports, I think it's better to look at the reverse. Not every 7' person makes it to the NBA or is even good at basketball. But, there are plenty of relatively smaller players in the NBA who do well and some are even super stars. The classic example was Mugsy Bogues, but Steph Curry is 6'2" in sport where height is so important.
Pick a sport where height isn't necessarily a dominating factor like the NHL and there are plenty of players under 6'.