Ethan Smith hit three 3-pointers in a pivotal second quarter as the Titans ran their record to 14-0 win a non-league road win.
Smith scored 19 of his team-high 22 points in the first half as Union turned a 12-10 first-quarter deficit into a 36-24 halftime lead.
Smith finished with five 3-pointers for the game. He also had a career-best seven rebounds.
Curtis Youngren added 14 points on 7-of-7 shooting from the field.
Union returns to league play Tuesday at Heritage.
UNION 66, ENUMCLAW 50
UNION (14-0) — Brad Lackey 2, Houston Combs 5, Ariya Briscoe 3, Josh Reznick 3, Tanner Toolson 11, Alishawaun Taylor 2, Ethan Smith 22, Mason Hill 2, Ty McCullum 2, Curtis Youngren 14. Totals 25 (10) 6-6 66.