Mason Balch scored the game-winner, and the Williston boys lacrosse team beat Canterbury 10-9 in overtime on Saturday at home.

He finished with two goals and two assists in the game.

The win clinched a Western New England Secondary School Lacrosse Association Division II championship for the Wildcats (8-4).

Kevin Talbot won the opening faceoff of overtime.

Rob Champigny had three goals, while Joey Ford chipped in a goal and four assists.

Baseball

Wilbraham & Monson 9, Williston 2 — Chris Espinal hit an RBI single for the Wildcats on Saturday.

Derek Zewinski doubled, and Florence’s Ian Ostberg had a single for Williston (3-8).

Boys golf

Williston 194, Loomis 194, Kingswood 208, Choate 21 — Junya Ozaki and South Deerfield’s Jacob Zaranek both shot 37s to earn the Wildcats’ medalist honor Saturday.

Williston (14-1) lost on a tiebreaker hole to Loomis in a nine-hole match at Tunxis Country Club in Farmington, Connecticut.

Girls golf

Williston 5, Westover School 0; Choate Rosemary 3, Williston 2 — Nancy Kang shot a 49 to help the Wildcats (4-8-1) split a tri match at Wallingford Counry Club in Connecticut on Saturday.

Boys tennis

Avon Old Farms 5, Williston 2 — Nikhil Sierros and Kenny Wang picked up wins at No. 1 and No. 2 singles, respectively, Saturday for the Wildcats (3-5).

Boys track and field

Westminster 87, Williston 70, Hopkins 27 — Hadley’s Chip Young pole vaulted nine feet to help the Wildcats place second at a tri meet Saturday.

Elijah Hutchinson won the 400-meter dash in 52.2 seconds.

Williston’s 4×400-meter relay of Goodman, Greg Iverson (Belchertown) Oaskar Lee and Hutchinson finished first in 3 mintues, 39.7 seconds.

Girls track and field

Williston 90, Miss Porters 68, Westminster 64, Hopkins 41 — Southampton’s Chloe Proudy won the 100 hurdles in 19.3 seconds and the 300 hurdles in 54 seconds, as the Wildcats finished first in a quad meet Saturday.

Sophie Carellas won the pole vault at 7-6.

Alexis Ryan placed first in the javelin at 94-10 and got second in the shot put and discus.

Williston’s 4×400 relay of Natalie Aquadro (Northampton) Molly Zawacki (Easthampton), Elin Blomquis and Sahnet Ramirez took first in 4:33.