Valley West hung tough at Sem, only trailing 10 at halfitme, but a huge third quarter propelled Sem to a big 81-46 win.
The Blue Knights outscored the Spartans 25-7 in the third.
Jake Koretz led Sem (1-1) with 23 points. Todd Phillips chipped in 21.
Christian Michak led Valley West (0-3) with 14 points.