The Spartans entered the postseason winning three straight, advancing it to the 3A district championship game Saturday at Puyallup High School.
Sumner played the Wilson Rams for the 3A district title.
The Spartans fell short, losing 59-50.
The girls finished in second place in districts and advanced to the 3A regionals.
Sumner’s next game is at 8 p.m. Saturday, Feb. 28 against West Seattle at Renton High School.
The winner of the game will advance to the state tournament that begins Thursday, March 5 at the Tacoma Dome.
The loser of the game Saturday will not move on.
The Spartans started the game off strong, leading Wilson 5-3 with 4:53 to play in first.
A timeout was called on the floor with Sumner trailing by one, 9-8 with 1:53 to play in the first quarter.
With 5:25 to play in the second quarter, the Rams took a 20-10 lead over the Spartans.
Senior forward and co-captain Jamie Lange left the game before the half with what appeared to be a right knee injury.
Entering halftime, Sumner pulled within nine, down 32-23.
Wilson continued to pull away and the Spartans trailed 43-27 with 2:35 to go in the third quarter.
Sumner cut the Rams’ lead to 10 entering the final eight minutes of play.
Halfway through the fourth with 4:13 to play, the Spartans were down one, 49-48.
Sumner fans and the Spartans’ bench erupted and cheered as the girls tried to stop Wilson.
But it wasn’t enough and the Spartans were unable to catch up.
Sumner lost by nine.
The Spartans lost more than the game Saturday.
Coach Jordan Moog said in an email Sunday that the Spartans’ trainer Brittany O’Maliey believes Lange has a sprained lateral collateral ligament (LCL).
Sophomore guard JaneAllyn Norris also suffered an injury Saturday when she fell out of bounds and landed on the corner of the bleacher stairs.
Moog said O’Maliey believes Norris “severely” bruised her ribs and possibly cracked them.
Both Lange and Norris, according to Moog, would be seen on Monday and more information regarding their injuries would be known afterward.
Despite the fall, Norris came back in and finished the game despite clearly appearing to be in pain.
However, Lange spent the rest of the game on the bench with ice on her right knee.
“(It is) gonna be a tough week preparing,” Moog said. “But I believe we can do it.”