Miekle scored 21 points in the first half as the Falcons (23-4) rolled out to a 47-11 halftime lead. Sprague-Harrington shot 53 percent and was never threatened. Sprague-Harrington will face Tekoa-Oakesdale the semifinals.
Natalie Deking added 18 points for Sprague-Harrington.
Shelby Adsero led Mary Knight (13-9) with 10 points. The Owls will face Curlew at 2 p.m. today for a berth in the fourth-place game.
Shareese Willey added eight points for MMK, which shot 30.2 percent (13-for-43).
Tekoa-Oakesdale 37, Curlew 26
Shelby Puckett and Kelsi Graffis each scored 10 points, and Tekoa-Oakesdale upset top-ranked Curlew.
Puckett had eight points in the first half as the Nighthawks (19-7) and Cougars (23-2) traded six-point leads before intermission. Graffis scored the first five points of the second half as Tekoa-Oakesdale built an 27-19 lead midway through the third quarter. Curlew, which scored just seven points in the second half, could never get closer than three points.
Colton 49, Pateros 38
Sammie Druffel and Alisa Moehrle each scored 12 points to lead Colton into the semifinals.
Sunnyside Christian 66, Inchelium 57
Tori Van Wingerden scored 11 of her game-high 30 points in the fourth quarter as fourth-ranked Sunnyside Christian rallied in a 1B state quarterfinal.
Class 1B boys state
Liberty Christian 61, Almira/Coulee-Hartline 44
Drew Hegarty scored 26 points and sank six 3-pointers to lead Liberty Christian.
Tulalip Heritage 58, Tri-Cities Prep 50
Antonio Johnson led three players in double figures with 18 points to lead Tulalip Heritage.
Sunnyside Christian 74, Lummi 37
Aaron Van de Graaf scored 20 points to lead top-ranked Sunnyside Christian.
Curlew 51, LaCrosse-Washtucna 48 (OT)
Austin Mannick basket with 53 seconds to go in overtime put Curlew ahead for good.
Two of Mannick's teammates each hit free throws in the final seconds, sending the Cougars into today's semifinals.
MOSES LAKE CHRISTIAN 62, OAKVILLE 35
Beau Shelton scored 10 points for Oakville, which was eliminated from the tournament in the loser-out game.
Bobby Johnson added eight points for the Acorns, who went just 1-for-13 from 3-point range and were outrebounded 50-36.
Shelton had a game-high 11 rebounds.
For Moses Lake Christian, Phillip Friehe scored 14 points.
ENTIAT 65, MARY M. KNIGHT 44
Mary M. Knight fell behind 24-9 and never recovered in the consolation-bracket loss that ousted the Owls from the tournament.
Sean Brehmeyer had 18 points and 10 rebounds to lead MMK, which shot 28.3 percent for the game (17-for-60).
Fredy Quezada led Entiat with 21 points.
Class 3A boys district
Mount Rainier 97, Capital 87
Aaron Lampkin's game-high 27 points and four assists couldn't lift the Cougars over Mount Rainier in a high-scoring 3A bi-district playoff match.
Opening to a 26-21 lead, the taller Mount Rainier squad outrebounded Capital 28-11.
"We're smaller than every team in the state, I think. The girls team might be bigger," Capital coach Doug Galloway said. "They were doing a nice job of breaking our press."
The Cougars managed to close the deficit to seven points, but Mount Rainier answered with a 3-pointer to restore its 10-point lead with three minutes remaining to advance in the winner's bracket.
Other notable Capital performances include Kevin Thai's 25 points and Brennan O'Keefe's 13 points and seven rebounds.
The Cougars now have to win three straight games to earn a state tourney bid. The first of those three comes at 6 p.m. Saturday against Auburn Riverside at Clover Park.
"I think we'll do fine," Galloway said. "The kids will come out and play hard."
Class 2B boys district
White Pass 37, Northwest Christian 36
It took one White Pass offensive rebound and putback along with some missed free throws to end the Navigators' season.
Leading through the majority of the game, Northwest Christian was sent to the line leading by six with three minutes remaining. Connecting on just one of their six foul attempts, the Navigators lost their lead slowly.
"It was a tight game," Northwest Christian coach Ed McClanahan said. "Both teams played pretty hard defense."
When White Pass pressed in the closing seconds, their initial game-winning shot fell short but the rebound and putback followed to end the game.
"I would say this was our best defensive rebounding of the season," McClanahan said in spite of how the game ended. "Come playoff time, those will win games for you. Our guys gave up a great effort."
Junior guard Ryan Fox led the Navigators with 13 points, while Cameron Hamilton added 12. Northwest Christian was injury-deprived of starting senior experience before the game.
Dan Mailhot, who was averaging 10 points a game, was injured in the final regular season game, and James Hobbs cut his hand on Wednesday, preventing him from playing.
"When you don't meet the goals you set for the team, it's a disappointing way to go out," McClanahan said. "But we won the majority of our games. Our kids had a lot of fun." Adsero scores 10 points as Owls drop into 1B consolation bracket