SAN ANTONIO — Moritz Wagner — you can call him Moe — patiently held the ball at the 3-point arc. He waited for his Michigan teammate Charles Matthews to make his move, cutting to the basket. Then Wagner sent a gorgeous bounce pass to Matthews, who laid the ball in to give the Wolverines a 4-point lead with less than six minutes to play in their N.C.A.A. tournament semifinal on Saturday.

In addition to that assist, Wagner had 16 points and 14 rebounds at that point. It seemed reasonable to ask: Is there anything he can’t do?

A 6-foot-11 junior from Germany, Wagner all but single-handedly brought an end to one of the wildest long-shot runs in tournament history, leading third-seeded Michigan to a grinding, at times soporific, 69-57 victory over 11th-seeded Loyola-Chicago.

Michigan will meet Villanova, which beat Kansas in the other semifinal, for the championship on Monday. Loyola, the enthralling underdog and one of just four teams seeded so low to reach the Final Four, was seeking to become the lowest seed ever in the final.