These are all nice. #2, while not showing a lot of competitive action is a bit of a classic pose ... I could see this on a box of Wheaties. I have shot a ton of boys high school soccer and there is a significant drop off of contact between the two ... making boys easier to shoot.
Gary
No I literally meant "back," as in player #3's back. Your backgrounds are fine for the most part. The 300 f/2.8 takes care of that pretty well.
Nill