Seattle Prep rolled to a 7-3 first-quarter lead and kept Bainbridge scoreless over the next two quarters to claim a 38-17 win in football Friday in Seattle.
The Spartans only score early in the game came via a 36-yard field goal by Sam Kallas in the first quarter.
The Panthers built on their first-quarter touchdown with 10 points in the second quarter and two more TDs in the third.
Bainbridge began to cut into the 31-3 advantage in the fourth quarter.
Leading rusher Max Wysong rushed for two touchdowns in the final stanza, and Kallas nailed the point-after kicks, for the Spartans' final 14.
Wysong finished the game with 22 carries for 80 years.
Kallas had four carries for 37 yards, while teammate Matt Stone had eight carries for 29.
The Spartans finished with 158 rushing yards.
Spartan quarterback Paimon Jaberi went eight-for-16 and finished with 94 passing yards and one interception.
On the receiving end, Stone had three catches for 27 years. Sam Kallas had two receptions for 18 years, and Nich Beirly had one for 24.
On defense, Kallas had 10 unassisted tackles and two assisted.
Dan Drewery had 10 tackles total, eight of them unassisted.
Tino Pelit had six unassisted tackles, including one for a three-yard loss.
Justin Totura also had six unassisted tackles, and one assisted.
The loss dropped the Spartans to 2-4.
Bainbridge will next face Hazen in a non-conference matchup on Friday, Oct. 11 in Renton.