Pro players in any sport very rarely retire mid-season. Even when they are dealing with an injury that is going to force them to retire they tend to step away at the end of the season. Just like we saw with Patriots receiver Julian Edelman a couple of days.
Today though, NBA player LaMarcus Aldridge has announced that he is effectively retiring from the NBA with plenty of games still left to play on the schedule. A heart condition is to blame for the player stepping away.