CHICAGO (Interstat) — Michael Busch drew a bases-loaded walk in the bottom of the 10th inning, forcing in the winning run and lifting the Chicago Cubs to a 7-6 victory over the Cincinnati Reds on Wednesday night at Wrigley Field.

The win was the Cubs’ eighth consecutive and their third straight walk-off victory, following a 3-2, 10-inning decision Tuesday night in which Busch delivered an RBI single. With the crowd of 34,143 on its feet, Busch worked a full-count walk against Brock Burke after the Cubs had loaded the bases on a sacrifice bunt and two intentional walks.

Chicago improves to 25-12, while Cincinnati falls to 20-17. The teams have played three straight one-run games, with the Cubs sweeping the series after winning 5-4 on Monday.

The Reds struck first in the top of the first. TJ Friedl walked, advanced to third on a single by JJ Bleday and scored on a groundout by Elly De La Cruz. Cincinnati led 1-0 after the top half.

Chicago answered in the bottom of the first. Alex Bregman singled with two outs, and Ian Happ followed by launching a two-run home run to left-center field, his ninth of the season, giving the Cubs a 2-1 lead.

The game remained 2-1 until the bottom of the fourth. Happ singled again, and Seiya Suzuki doubled sharply to left, driving in Happ. Michael Busch singled, putting runners at the corners. Carson Kelly hit a ground ball that turned into a double play, but Suzuki scored on the play, pushing the Cubs’ lead to 4-1.

Cincinnati cut the deficit in the top of the fifth. Matt McLain led off with a solo home run to right-center, his third of the season, making it 4-2.

Both starting pitchers settled in after that. Cubs right-hander Colin Rea worked 5 1/3 innings, allowing six hits and one earned run while striking out five. Reds starter Brady Singer went six innings, surrendering six hits and four earned runs with six strikeouts.

The Reds mounted a rally in the top of the sixth. Sal Stewart walked, and Nathaniel Lowe singled to put runners at the corners. But the Cubs’ defense held, and Jacob Webb escaped the inning unscathed after entering in relief.

Chicago held its 4-2 lead into the ninth. But the Reds erupted for four runs in the top half. Spencer Steer led off with a solo home run to left-center, his sixth. Will Benson singled, and Tyler Stephenson followed with another single. After a sacrifice bunt by McLain, Bleday singled to right, scoring Benson and loading the bases. De La Cruz then lifted a sacrifice fly to right, scoring Stephenson and McLain, giving Cincinnati a 6-4 lead.

The Cubs answered in the bottom of the ninth. With one out, Carson Kelly singled. Pete Crow-Armstrong then crushed a two-run homer to left-center, his fourth of the season, tying the game at 6-6. The blast sent the game into extra innings.

In the top of the 10th, Nathaniel Lowe walked. The Reds attempted a sacrifice, but the Cubs turned a double play, erasing the runner. Will Benson grounded out to end the threat.

In the bottom of the 10th, pinch-hitter Michael Conforto sacrificed the automatic runner, Nico Hoerner, to third. Burke then intentionally walked Alex Bregman and, after Ian Happ struck out, intentionally walked Seiya Suzuki to load the bases. Busch fell behind in the count before taking a close 3-1 sinker for ball four, forcing in Hoerner and sending the Cubs to their eighth straight win.

Key performers: Rea turned in a quality start with 5 1/3 innings, six hits and one earned run. Happ went 3 for 5 with a home run and two RBIs. Webb tossed 1 2/3 scoreless innings. Singer allowed four earned runs over six innings with six strikeouts. Crow-Armstrong was 2 for 3 with a homer and two RBIs. McLain went 2 for 3 with a solo homer. Antone threw a scoreless inning with two strikeouts for the Reds. Thornton pitched a scoreless inning for the Cubs. Johnson retired the only batter he faced. Maton recorded a scoreless inning with one strikeout.

The game took 2 hours, 57 minutes to complete. Both teams recorded 10 hits.

The Cubs completed the three-game sweep and will host the Reds again Thursday. Cincinnati returns home Friday to start a series against Houston. Chicago travels to Texas for a weekend set.

Interstat’s game simulator had projected a final score of Chicago Cubs 7, Cincinnati Reds 4. Interstat’s ELO system gave the Cubs a 63.50 percent probability to win. Chicago was installed as a pregame favorite with a spread of minus 1.5 runs. The total of 12 runs scored went under the over/under line of 8.