Hate to break it to you, but your kid's sports aren't really all that important.
In one of the many very best talks he has ever given, Elder Dallin Oaks made it pretty clear that it is not OK to ditch Mutual just because "I've got Practice" or "I have a game tonight." In his Oaksian manner, he said: " Some young men and women are skipping Church youth activities or cutting family time in order to participate in soccer leagues or to pursue various entertainments. Some young people are amusing themselves to death—spiritual death."
Whaaaat? How can that be? If the FOMLs are ever going to be the next Steve Young, Danny Ainge, etc., they have got to make this a priority! Oh, and by soccer, I think he means any sport. (Do I dare risk bodily harm and say Dance is applicable?)
One last point: Upon multiple readings I determined that the words "Adult", "Gospel Doctrine", "Car Radio", and "NBA Playoffs" were never uttered in the same sentence by Elder Oaks.