Does your child dominate on the soccer field between the ages of 8-16? Do you know why? Do you think it's because they are a better player? Take a step back and truly evaluate as to why. If it's because they are PHYSICALLY dominating then heed the following warning: 

If they rely on physical attributes instead of playing ability (technique/FOOTBALLING Intelligence) then forget it. By the age of 16, they will be found out and CAUGHT. Smaller and less physically dominant players will grow and mature physically and learn to WIN. Luka Modric is a perfect example, he WON the Ballon D'or and has NO dominating physical attributes (size, speed, or strength).