Many sports teams don't build all that much of friendship outside of training and competitions. They are acquitances with no other investment.
The moment you get injured or sick, friendship is gone. Same goes for hobby groups.
The moment you get injured or sick, friendship is gone. Same goes for hobby groups.
Way more likely is that when people stop going for whatever reason, the relationship ends. Getting injured or sick or having new kid and less time or whatever all means you disappear.