My ds8 is just about the youngest in his grade (he has a June birthday). He is also the only in child in his grade in the schools gifted program, and the only child who goes up a grade (to 4th) for math/reading. He is also very small for his age. He does play soccer - but his size so far has not been a problem - he's been "playing up" for a couple of years now, and is still one of the better players. Don't let anyone tell you that younger boys don't do well smile