The host Titans capped off their regular season with a high-scoring show against the Timberwolves.
Jordan Chatman had 25 points, 10 rebounds and eight assists, leading the 4A Greater St. Helens League champions to the win.
Union (15-5, 10-2) was 11 for 20 from 3-point distance. The Titans made five of those 3-pointers during a 27-point third quarter.
Union will open the Class 4A bi-district tournament at home on Tuesday against the winner of Friday’s game between Gig Harbor and South Kitsap.
Tyler Copp and Sever Whalen scored 15 points apiece for the Titans, and Tanner Nelson finished with 14.
Timmy Herget scored 32 points for Heritage (2-18, 1-11).
UNION 98, HERITAGE 67
HERITAGE — Marquis Evans 2, David Martin 2, Daniil Karpyuk 2, Jeff Bersch 0, Timmy Hergert 32, Cherno Sowe 6, Ezekial Wells 10, Jake Dahlberg 13. Totals 22 (9) 14-16 67.
UNION — Dionte Ceaser 2, Kyle Mercer 0, Tyler Copp 15, Dominique Ceaser 7, Seaver Whalen 15, Tanner Nelson 14, Jordan Chatman 25, Trent Cowan 0, Kaben Humphrey-Butler 2, Gabe Rego 6, Micah Merfeld 4, Brian Cairns 8, Blake Dobbins 0. Totals 39 (11) 9-11 98.
Heritage 15 20 18 14–67
Union 26 19 27 26–98
JV — Union 73-47. C — Union 72-35.