Reds 13, Cubs 6
CHICAGO -- Pinch hitter Adam Duvall slugged a go-ahead home run in his first Cincinnati Reds at-bat in a 13-6 victory over the Chicago Cubs on Monday.
Duvall, called up from Triple-A Louisville earlier in the day, capped a four-run sixth with a two-run shot to left that also scored catcher Tucker Barnhart and snapped a 5-5 tie.
The Reds (54-76) have now won two of their last three. The Cubs (74-56) have dropped five of their last six.
Duvall, acquired by the Reds in a late July trade with the Giants, had spent the past month in Triple-A.
Cincinnati right-handed reliever Ryan Mattheus (2-4) pitched one-third of an inning for the win. Left hander Aroldis Chapman worked 1 2/3 innings for his 26th save.
Chicago right-hander Justin Grimm (2-4) pitched one-third of an inning in the sixth, giving up four runs on three hits for the loss.
The Reds exploded for six runs in the ninth, first loading the bases to chase Cubs left-hander Travis Wood with two out. Chicago second baseman Starlin Castro then bobbled a grounder, allowing right fielder Jay Bruce to score from third for an 8-5 lead.
Barnhart, who went 3-for-5, singled off left-handed deliver James Russell to score first baseman Joe Votto and pinch runner Ryan LaMarre to make it 10-5.
A Castro error on Chapman's grounder brought home shortstop Eugenio Suarez for an 11-5 lead. Center fielder Jason Bourgeois doubled to left to drive in Chapman and Barnhart as the lead reached 13-5.
Cubs second baseman Addison Russell homered with two out in the ninth to cut the final margin.
The Cubs led 1-0 in the third after center fielder Dexter Fowler's two-out solo home run to left. The homer, on a 2-0 pitch, was Fowler's career-high 15th.
The Reds punched across one run in the fourth. Cincinnati had runners on first and second with two out and left fielder Ivan DeJesus singled to shallow center to drive in first baseman Joey Votto from second and force a 1-1 tie.
Cincinnati scored twice more in the fifth for a 3-1 lead as second baseman Brandon Phillips' two-out base hit to left scored righty Michael Lorenzen and Bourgeois.
Chicago replied with four runs in last of the fifth.
Starlin Castro led off with a double, Kyle Hendricks was pulled for pinch hitter Chris Denorfia, who walked, and Russell lined a double with none out into the left-field corner to bring both home.
Catcher Kyle Schwarber then singled home Russell with one out to chase Lorenzen. Third baseman Kris Bryant greeted Mattheus with a two-out infield single to score Schwarber from second for a 5-3 lead.
Lorenzen worked 4 2/3 innings and allowed five runs on six hits, struck out five and walked one.
Hendricks allowed three runs on five hits in a five-inning outing. He struck out four and walked three.
The lead was short-lived as the Reds forced a 5-5 tie in the sixth. Suarez homered to right off Grimm for his 10th of the season while also driving in DeJesus.
Duvall then clubbed his first home run of the season -- a two-run shot in his Reds debut -- to score Barnhart for a 7-5 lead.
NOTES: The Cubs acquired OF Austin Jackson and cash from the Seattle Mariners for an international signing slot and a player to be named. ... The Reds recalled RHP Michael Lorenzen from Triple-A Louisville and gave him the start Monday. Cincinnati also called up INF/OF Adam Duvall, who was acquired in the July trade that sent RHP Mike Leake to the San Francisco Giants. ... The Reds optioned LHP David Holmberg to Louisville and placed OF Brennan Boesch on the 15-day disabled list with a right ankle contusion. ... Cincinnati RHP Anthony DeSclafani (7-10, 3.84 ERA) against Chicago RHP Dan Haren (8-9, 3.90 ERA) on Tuesday. ... Cubs RHP Jake Arrieta was selected the National League Player of the Week after his Sunday no-hitter over the Los Angeles Dodgers capped a 2-0 week. ... Chicago came into Monday with a 19-8 August record. The Cubs went .500 or better in every calendar month this season.