Each school has every type of ball to practice with the few days before playing said team. So, the few days before the Maryland game the Hawks will practice with UnderArmour basketballs, before Wisconsin its Sterling, before Nebraska and Indiana its adidas, before Michigan it's The Rock, before Northwestern its Wilson (I believe) and before every other conference team its Nike. Big 10 tournament is Spaulding and NCAA is Wilson. It is also the same for whatever opponent/tournament they will be playing at in the non-conference games as well.