CHICAGO -- The Cincinnati Reds turned a quiet afternoon at Wrigley Field into a fireworks display, rallying from three runs down to defeat the Chicago Cubs 10-8 on Friday night. Four home runs fueled the comeback, including a decisive three-run shot from Tyler Stephenson that capped a five-run sixth inning.

The Cubs jumped out early, scoring three times in the first three innings against Reds starter Rhett Lowder. But Cincinnati chipped away in the fifth, cutting the lead to 3-2 with a pair of runs. The real explosion came in the sixth. Jose Trevino led off with a solo home run to tie the game. After a walk, TJ Friedl singled, and Sal Stewart drove in a run with a base hit. Stephenson then stepped to the plate, launching a 399-foot blast to center field that cleared the bases and put the Reds ahead 7-3.

Cubs reliever Trent Thornton, normally a reliable arm, had a disastrous outing. In just two-thirds of an inning, he surrendered five runs on four hits and a walk, taking the loss. Thornton had been excellent for Chicago, not allowing a run in August and giving up only four earned runs over his last 26 appearances since mid-June. The bullpen's struggles continued a troubling trend: the Cubs' relievers blew two saves on their recent West Coast trip.

Cincinnati kept adding on. Stewart, who had a single, a walk, two RBIs, and two runs scored, hit his 29th homer of the season in the seventh. Friedl also went deep in the eighth, giving the Reds a 9-3 cushion. Five Reds players recorded multi-hit games, including shortstop Elly De La Cruz, who collected three hits, two RBIs, and a run.

The Cubs refused to go quietly. In the bottom of the eighth, Seiya Suzuki doubled in a run, and rookie Pedro Ramirez crushed a three-run homer to cut the deficit to 9-8. But Reds relievers slammed the door, retiring the side in order in the ninth. Lowder, who allowed three runs on five hits with five strikeouts over six innings, earned his sixth win against eight losses.

The victory was especially sweet for Cincinnati, which had struggled mightily at Wrigley Field this season. The Reds were swept in a four-game series in Chicago in May and entered Friday with a 1-6 record against the wild card-leading Cubs. The win pulled them closer in the National League wild card race.

Looking ahead, the Reds send left-hander Andrew Abbott (6-9, 4.15 ERA) to the mound on Saturday, while the Cubs counter with right-hander Kevin Gausman (7-11, 4.37). Both teams will be eager to gain momentum in the tight playoff chase.