This is little league soccer for adults.
Finally we want to walk without limping to work on Monday. We are too old to be playing like we are 18. Playing aggressive i.e. throwing elbows, hard tackles, even throwing hip checks, though some may be within the rules of soccer, are not part of this leagues scope. Those practices are conducive to injury. There are many things which are legal in the FIFA rules of soccer that have no place on our pitch at our level.
Sportsmanship is everything. If you take someone out by accident go above and beyond what is necessary to reconcile the mistake. Stop your play, help them up, apologize, give them the ball, buy them a beer… what ever, but don’t walk away from that spot without making sure that person has no desire to “get even”. Escalation will just lead to anger, retaliation and ultimately injury. If anyone is sore it should be solely from their own efforts and not due to someone else’s efforts.