This works very well because of the colours but more importantly because the focus is on the fence and the action in the background is oof. Nice capture.
Interesting shot. I would crop the left (to a bit to the left of the group of blue and red players) to eliminate the distraction of the light at the far left.
It's obvious you understand the composition of a sentence, and therefore the term composition. Your pic is like a nice sentence where the subject is the fence and the rest of what is included explains the fence.