Sounds very familiar. Parents were like this when I played baseball and really bad in football. Apparently some parents didn't realize their kids were playing a contact sport! I played Free safety and QB. I LOVED to hit people on defense! I was one of the smallest players on the field but one of the most fearless defenders. Parents would complain that I would hit too hard.
My coach and the assistant coach(my dad) would laugh at them and point out that the 100lb kid just knocked their 150lb kid on their butt! lol The same parents didn't complain when I would get lit up as QB. Even had a coach complain, as we were making a late game comeback drive, that my jersey was torn to the point that you couldn't read the number. This was against the rules and even though it happened during THAT game, the ref still made me come out of the game. had to swap jerseys with a team mate before heading out to win the game! haha Coach was FURIOUS because I was wearing someone elses jersey now.
I remember when I played baseball. I bet I was in 6th or 7th grade and we played this out of town team. Their pitcher, whom was scary fast, had a full beard!!! Our coach asked to see the kids birth certificate befor ethe game even started! lol Sure enough, he was just a serious FREAK!