The Orlando Magic’s defense — which had posted the league’s worst defensive rating (121) entering Monday — was the central focus pregame ahead of their homestand-opening 109-102 loss to the Milwaukee Bucks. While they performed better on that end of the floor, holding the Bucks to what coach Jamahl Mosley said is a range that typically qualifies for a good defensive game, the Magic also gained a better understanding of what high-level defense looks like and why Milwaukee’s is the best rated. Very little came easy. Drives were met with resistance.