MILWAUKEE — It looked like a Colson Montgomery grand slam and yet another home run from Munetaka Murakami on Sunday might cure what had ailed the White Sox to start a putrid opening weekend.

But a revamped bullpen showed the same leaks it has for years en route to a deflating 9-7 loss capped by a go-ahead three-run Christian Yelich blast in the eighth inning off newly signed Sox closer Seranthony Dominguez.

Montgomery launched the second grand slam of his young career after the Sox flooded the bases to lead off the game with walks drawn by second baseman Chase Meidroth and Murakami, followed by third baseman Miguel Vargas’ bloop single.

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There was no doubt about the 104-mph blast Montgomery launched 405 feet over the center field wall for his first homer of the season after a whacking 21 his rookie year.

Colson Montgomery GRAND SLAM 😤 pic.twitter.com/YOwPC887Il

— MLB (@MLB) March 29, 2026

Milwaukee bounced back against Sox starter Anthony Kay with a two-run homer from Gary Sanchez in the bottom of the inning, but the Sox bounced back as Murakami pulled his third dinger in his third career game, glancing off Milwaukee right fielder Sal Frelick’s glove to escape American Family Field.

The usually stoic Murakami pumped a fist as he rounded the bases, becoming just the fourth player in MLB history to go yard in each of his first three career games.

THREE MLB GAMES

THREE HOME RUNS

Munetaka Murakami is blasting baseballs to start his MLB career 😤 pic.twitter.com/Gnprk793bO

— MLB (@MLB) March 29, 2026

Montgomery tabbed his fifth RBI of the game later that inning with a base knock to score Vargas, who had singled and stole second on a brutal afternoon for Brewers starter Brandon Sproat.

Sox right fielder Everson Pereira, who had a forgettable first two games, spanked one 403 feet the next inning off Sproat, who was rocked for seven runs on four walks and six hits.

Kay bent but didn’t break in 4 ⅔ innings of two-run ball, giving up