I have a daughter playing competitive U13. Her coach is using her in a
number of positions and being a guy raised playing hockey, I have a good
understanding on how the positions in hockey work. Soccer introduces two
positions that are a bit foreign to me and I am hoping that somebody can
explain what the responsibilities are of the Stopper and the Sweeper. I
understand where they play on the field but I a bit lost on what they are
supposed to do.

Thanks.