A three-goal first half lifted Willmar to the victory at a wet Hodapp Field.
Ellery Lange scored two goals and Sam Christoffer had one for the Cardinals, who improve to 4-2-1, including 4-1-1 in Central Lakes Conference play.
Sauk Rapids (1-4-1, 1-5-1) scored on a penalty kick late in the second half.
Willmar next plays at 7 p.m. on Tuesday at St. Cloud Tech.
Willmar 3, Sauk Rapids 1
Sauk Rapids (1-5-1)................. 0 1 — 1
Willmar (4-2-1).......................... 3 0 — 3
FIRST HALF – (1) W: Ellery Lange (Christoffer) 2nd minute ... (2) W: Sam Christoffer (Lange) 9th minute …. (3) W: Ellery Lange (Fernanda Ossa Letelier) 27th minute
SECOND HALF – (4) SR: unavailable on PK in 73rd minute
SHOTS ON GOAL – SR: 11. W: 11.
GOALIE SAVES – Sauk Rapids: unavailable 8 … Willmar: Ella Swenson 11
CCS 4, Chain of Lakes 1
Conner Levesque and Mark Arnold both had a pair of goals to lift Community Christian School of Willmar to a victory over Chain of Lakes at Ampe Park in Paynesville.
Jack Velyan had seven saves at goalie for the Eagles. Max Chapin also had an assist in the win.