The two hooked up in another classic Thursday night, eventually decided when Job Niewenhuis scored with 15 seconds remaining to lift Christian to a 57-55 non-conference win in double overtime at the Aberdeen Civic Arena.
Summit had a chance to tie the score in the closing seconds, but missed two shots in the lane.
"Last year, both games were decided on the last play of the game and this was, too," said Christian coach Dave Palmer.
The two schools, which are among the smallest in the state, have had some memorable matchups the past few seasons.
"The last three games have been decided by two points, one point and two points," said Summit coach Nathan Bloom.
The contest was tight throughout. The Knights led by seven points twice in the first half, and once in the fourth quarter, but each time Summit battled back.
The visitors eventually took a 48-45 lead before Tanner Droog nailed a three-pointer with one minute left in regulation.
"Tanner Droog struggled and struggled all week shooting the ball and he still had the confidence to pull up and take his shot, which he needs to, and he buried that three," Palmer said. "That really was a play that gave us a chance to go to overtime and keep going."
Droog, who had not scored up until that point, credited his teammates for getting him the ball.
"I just got an open look," Droog said. "My teammates found me and one finally went in."
Droog then made two key free throws to give Christian the lead before Trecy Zirbel tied it with 34 seconds left to force the first overtime.
The Eagles then led 53-50 in the first OT before Christian rallied and eventually took a lead thanks to two more free-throws from Droog.
"I've been struggling through the year a couple games, but they went in when it counted," Droog said.
Summit regained the lead on two fouls shots from Jake Steinocker only to have Niewenhuis tie the score again on a free throw to force the second overtime.
Both teams had chances in the second extra session before Niewenhuis eventually provided the game-winner.
"The good players made plays when they had to on both ends," Bloom said, "and that's why the game ended up the way that it did."
Sam Palmer scored 18 points, Matt Rohrbach added 15 and Niewenhuis had 14 for Christian. Droog finished with seven points, 10 rebounds and four steals.
Steinocker had 17 points and Zirbel 16 for Summit.
The Eagles also received a big boost from their bench as Jacob Gapp had 11 points and Montel Campbell had seven points, eight rebounds and two steals.
"Those young guys have been big for us all year," Bloom said. "They're a very good guard tandem and they work well together."
Christian, 6-3, heads to Leola on Saturday to face Leola-Frederick at 6 p.m.
The Knights have already had two nail-biters this week, losing to Northwestern in the closing seconds on Monday.
"It feels good (to win tonight), because Northwestern was a rivalry and we lost to them and then we came back on our court and pulled it out in double overtime," Droog said. "It was a team effort and everyone did their part."
Fans should already mark their calendars for the next Summit-Christian matchup.
"This is good basketball," Bloom said. "Two evenly matched teams going head-to-head. You can't ask for better basketball than this. It was a lot of fun."
SUMMIT: Tanner Bartunek 1 2-2 4, Jake Steinocker 6 5-7 17, Trecy Zirbel 6 2-2 16, James Rudebush 0 0-2 0, Jacob Gapp 4 0-0 11, Montel Campbell 3 0-0 7. Totals 20-52 9-11 55.
ABERDEEN CHRISTIAN: Sam Palmer 6 1-2 18, Noah Aderhold 0 0-2 0, Job Niewenhuis 5 4-6 14, Tanner Droog 1 4-6 7, Matt Rohrbach 6 0-0 15, Seth Lundeen 1 0-0 3. Totals 19-57 9-14 57.
Summit (5-3) 11 24 33 50 55 55
Aberdeen Christian (6-3) 17 27 34 50 55 57
3-point field goals - Zirbel 2, Gapp 3, Campbell, Palmer 5, Droog, Rohrbach 3, Lundeen. Fouled out - Campbell. Total fouls - Summit 16; Aberdeen Christian 15. Rebounds - Summit 41 (Steinocker 8, Campbell 8); Aberdeen Christian 28 (Droog 10). Turnovers - Summit 22; Aberdeen Christian 14. Assists - Summit 14 (Campbell 7); Aberdeen Christian 14 (Rohrbach 5). Steals - Summit 6 (Steinocker 2, Campbell 2); Aberdeen Christian 13 (Droog 4). B Game - Summit 41-35. Officials - Kris Frericks and Steve Markley.