MARIPOSA -- Cody Wichmann unleashed 28 minutes worth of frustration in one emphatic dunk.
The Mariposa crowd that had impatiently waited all evening to explode, erupted in a blur of motion and noise.
With just over 4 minutes to play in the fourth quarter and Christian Brothers staked to a 39-37 lead, momentum finally swung Mariposa's way.
Mariposa got the defensive stop it needed and with the opportunity to tie the game or take the lead for the first time in the second half, Mariposa threw the ball and its playoff chances away.
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Christian Brothers answered with an easy transition layup and Mariposa never challenged again in a 49-47 loss in the first round of the Sac-Joaquin Section Division IV playoffs.
"I thought we had it after the dunk," said Wichmann, who finished with a game-high 18 points and 11 rebounds. "Momentum was on our side. The crowd was back in it. We just couldn't get it done.
"I guess they've been in a few more tight ball games and knew how to finish it off."
Mariposa (24-4) did make Christian Brothers earn a trip to the second round, however.
An Asante Cleveland offensive rebound and putback gave CB (13-14) a 47-39 lead with 1:24 to play.
Wichmann answered with consecutive buckets down low to make it 47-43 with 29.3 seconds to play.
Dondre Butler made 1 of 2 free throws to push Christian Brother's lead back to four, but CB gave Mariposa one final chance to make it a game by fouling Pierce Chaney in the act of shooting a 3 with 7.3 seconds to go.
Chaney provided Mariposa a much needed spark, scoring 11 of his 15 points in the second half, but erased any last-second drama when he missed his first free throw.
Chaney sank the last two, making it 48-45, but Butler put the game away with another free throw.
"I knew we were down at halftime and I needed to give more effort if we were going to win," Chaney said. "We just didn't get back on defense consistently. They got a lot of easy layups and it prevented us from ever making a run."
Christian Brothers' defense contributed to that as well.
The combination of Cleveland and Jake Modeste kept Wichmann off balance in the post all night.
The Mariposa center shot 7 of 21 from the floor and scored just one point in the second and third quarters.
"Their defense was really tough," Mariposa coach Trace DeSandres said. "They played really good man-to-man and we came out a little tentative.
"They forced us to take a lot of off-balance shots and it hurt us."
CB 8 13 12 16 -- 49
Mariposa 11 7 10 19 -- 47
CHRISTIAN BROTHERS -- Dondre Butler 11, Paul Drozd 6, Asante Cleveland 13, Mateo Brown 4, Casey Lonh 9, Jake Modeste 6. Totals: 18 12-19 49.
MARIPOSA -- Jeremiah Baca 2, Frankie Pena 2, Cody Peterson 1, Piercee Chaney 15, Drake Long 3, Cody Wichmann 18, Kevin Shenk 6. Totals: 15 17-21 47.
3-pointers: CB 1 (Butler), Mariposa 1 (Chaney); Total Fouls: CB 19, Mariposa 16; Foul Outs: CB (Modeste).
Records: Christian Brothers 13-14; Mariposa 24-4.