PITTSBURGH (Interstat) — The Chicago Cubs erupted for six runs in the seventh inning Wednesday night at PNC Park, turning a one-run deficit into a 10-4 victory over the Pittsburgh Pirates and avoiding a three-game sweep.

The Cubs, who had lost the first two games of the series by a combined score of 14-2, snapped a seven-game losing streak overall. Chicago had not won since a 7-1 decision at Texas on May 8, a span of 12 days and eight consecutive defeats.

Chicago scored two runs in the first inning, one in the second and one in the fourth to build a 4-3 lead, but the Pirates tied the game in the bottom of the fourth on a solo home run by Konnor Griffin. The score remained 4-4 until the top of the seventh, when the Cubs sent 11 batters to the plate and scored six times against three Pittsburgh pitchers.

The decisive rally began with Michael Busch being hit by a pitch from Pirates reliever Yohan Ramírez. Alex Bregman followed with a double, putting runners on second and third. Ian Happ then launched a three-run homer to right field, his 11th of the season, giving the Cubs a 7-4 lead. Seiya Suzuki singled, and Michael Conforto followed with a two-run homer to right-center, his fourth of the year, extending the lead to 9-4.

After a strikeout, Dansby Swanson reached on a throwing error by shortstop Konnor Griffin. Pete Crow-Armstrong struck out, but Nico Hoerner walked. Busch then singled to right field, scoring Swanson to make it 10-4. Bregman lined out to end the inning.

Ramírez was charged with four earned runs on three hits in one-third of an inning and took the loss, falling to 2-2. Jacob Webb, who pitched a scoreless sixth inning for the Cubs, was credited with the win, improving to 1-1.

The Cubs’ offense totaled 14 hits, led by Ian Happ, who went 3-for-6 with a home run and three RBIs. Nico Hoerner had three hits and two RBIs, while Dansby Swanson and Carson Kelly each contributed two hits. Michael Conforto also homered and drove in two runs.

The Pirates managed seven hits, with Bryan Reynolds collecting three of them, including a double. Brandon Lowe hit a three-run homer in the third inning, his 14th of the season, and Griffin added a solo shot in the fourth for the Pirates’ other run.

Chicago opened the scoring in the first inning. Pete Crow-Armstrong walked, Nico Hoerner singled, and Michael Busch walked to load the bases. After Alex Bregman struck out, Ian Happ singled to center, driving in Crow-Armstrong and Hoerner. The rally ended when Seiya Suzuki grounded into a double play.

The Cubs added a run in the second. Kelly singled, Swanson singled, and after a flyout, Hoerner singled to right to score Kelly. Busch struck out to end the inning with the Cubs ahead 3-0.

Pittsburgh answered in the third. Endy Rodríguez walked, Esmerlyn Valdez struck out, but Spencer Horwitz singled. Lowe then homered to right, tying the game 3-3. Reynolds flied out and Nick Gonzales popped out to end the inning.

Chicago regained the lead in the fourth. Swanson doubled, and Crow-Armstrong doubled to right-center, scoring Swanson. Hoerner struck out to end the inning with the Cubs ahead 4-3.

The Pirates tied the game in the bottom of the fourth when Griffin led off with a homer to right. After that, Marcell Ozuna struck out, Rodríguez walked, and Valdez flied out to center.

The Cubs’ bullpen held the Pirates scoreless over the final five innings. In addition to Webb, relievers Phil Maton and Caleb Thielbar combined for three scoreless innings, allowing two hits and striking out three.

Pittsburgh threatened in the eighth when Reynolds singled, but was forced out at second on a grounder by Gonzales. Oneil Cruz struck out to end the inning. In the ninth, Griffin grounded out, Ozuna flied out, Rodríguez walked, and Valdez grounded out to end the game.

The Cubs improved to 30-26, while the Pirates fell to 29-27.

Chicago and Pittsburgh will play the final game of the four-game series Thursday afternoon at PNC Park. The Cubs then travel to St. Louis for a three-game weekend set, while the Pirates host Minnesota for three games beginning Friday.

Interstat’s game simulator had projected a final score of Pittsburgh Pirates 4, Chicago Cubs 1. Interstat’s ELO system had projected the Cubs with a 53.40 percent probability to win. Chicago had been installed as a pregame favorite with a spread of minus-1.5. The total score of 14 went under the over-under line of 8.5.