The Spartans secured the South Puget Sound League 3A championship and won the rivalry game 24-7.
The Spartans started the game with a 43-yard field goal with seconds remaining in the first quarter.
The Panthers took the lead by four with a 2-yard run from junior running back Jason Day.
The Spartans took the lead in the third quarter with a pair of touchdowns.
Connor Wedington scored on a 65-yard touchdown run and Josh Riley scored on a 48-yard run to put the Spartans on top by ten, 17-7.
The final score came on a 35-yard pass from sophomore quarterback Luke Ross to sophomore receiver Tre Weed for six.
The Spartans are undefeated entering the final regular season game of the year.
Sumner travels to Auburn to face the Riverside Ravens at 7 p.m. Friday, Oct. 30 at Auburn Memorial Stadium.
The Bonney Lake Panthers are 2-5 overall on the season.
The final regular season game for the Panthers is an away meeting with the Peninsula Seahawks scheduled for 4 p.m. Monday, Nov. 2 at Roy Anderson Field.
Enumclaw High hosted the Lakes Lancers for Homecoming Friday and lost 42-21.
Enumclaw’s first score of the game came in the second quarter off a 1-yard run by Connor Pierce.
Lakes scored two rushing touchdowns and one passing and led 21-7 at the half.
The third quarter belonged to the Lancers.
Lakes scored two more rushing touchdowns and added to its lead.
Now up 35-7, the game entered the fourth quarter. Enumclaw scored two more times but it wasn’t enough.
The first score of the final quarter for the Hornets was a 6-yard pass from quarterback Scott Garvin to Adam Rhodes.
Another pass from Garvin to Kyle Russell for 32 yards was good for six.
Lakes scored another touchdown to end the game.
The Hornets end regular season play by traveling to Auburn to face the Mountainview Lions Thursday, Oct. 29 with kickoff set for 7 p.m.