MILWAUKEE (Interstat) — A stunning six-run eighth inning, capped by a pinch-hit, three-run home run from Christian Yelich, propelled the Milwaukee Brewers to a 9-7 comeback victory over the Chicago White Sox on Sunday afternoon at American Family Field, completing a season-opening three-game sweep.

The Brewers, now 3-0, trailed 7-2 after three innings and were down by four runs entering the bottom of the eighth before mounting a relentless rally against the White Sox bullpen to stun the visitors and a crowd of 32,737.

The most important part of the game was undoubtedly the Brewers’ eight-inning explosion, a sequence that saw them send 11 batters to the plate and erase what had seemed like a comfortable White Sox lead. The inning transformed a likely series finale loss into a dramatic victory and extended the White Sox’s winless start to 0-3.

Chicago’s offense exploded early against Brewers starter Tobias Myers, who failed to record an out in the second inning. In the first, the White Sox loaded the bases on two walks and a single before rookie shortstop Colson Montgomery launched a grand slam to center field, his first homer of the year, for a 4-0 lead.

The Brewers answered with two in their half of the first on a two-run homer by Gary Sánchez, but the White Sox continued to pour it on. Munetaka Murakami hit a solo home run in the second, and Montgomery later added an RBI single in the frame, giving him five RBIs through two innings. Everson Pereira led off the third with a solo shot, extending Chicago’s advantage to 7-2.

White Sox starter Anthony Kay settled in after the first, delivering 4 2/3 innings while allowing two earned runs on three hits and striking out five. The Chicago bullpen held the line through the middle innings, with Grant Taylor striking out the side in the sixth.

Milwaukee chipped away with a run in the sixth on an RBI single by Brandon Lockridge, making it 7-3, but the game appeared firmly in Chicago’s control as it entered the late innings.

The complexion of the contest changed entirely in the eighth. Facing White Sox reliever Seranthony Domínguez, the Brewers opened the inning with three consecutive baserunners: a Joey Ortiz single, a Lockridge single and a walk to Blake Perkins. Brice Turang then lined a single to left, scoring Ortiz and cutting the deficit to 7-4.

After a popout, Luis Rengifo delivered a two-run single up the middle, scoring Lockridge and Perkins to pull Milwaukee within a run. That set the stage for Yelich, pinch-hitting for Sánchez. Yelich worked the count before driving a 2-2 pitch deep to right field for a three-run homer, flipping the score to 9-7 and sending the stadium into a frenzy.

The offensive outburst made a winner of Jake Woodford, who pitched two scoreless innings of relief. Trevor Megill worked a perfect ninth, striking out two, to earn the save.

The loss overshadowed Montgomery’s huge day at the plate for Chicago, finishing 2-for-3 with a walk, the grand slam and five RBIs. The White Sox, however, grounded into two double plays, including one to end the top of the eighth, which snuffed out a potential insurance run.

The Brewers’ bullpen quartet of Jared Koenig, Grant Anderson, Woodford and Megill combined for five shutout innings, allowing just three hits and striking out nine to keep the game within reach.

According to pregame projections from Interstat, the result was a significant upset. Their game simulator had projected a 1-0 Brewers victory, and their ELO system gave Milwaukee a 73.8% probability to win. The combined 16 runs easily surpassed the over/under line of 8.

The White Sox will look for their first win as they open a three-game series at the Miami Marlins on Monday. The Brewers, riding the momentum of their comeback sweep, will welcome the Tampa Bay Rays for a three-game set beginning Monday.