Frank Schwindel hit a go-ahead grand slam, Matt Duffy homered twice, including a grand slam, and the Chicago Cubs outslugged the Pittsburgh Pirates on Sunday for an 11-8 win.
With Chicago trailing 8-7 with two outs and the bases loaded in the seventh inning, Schwindel hit a curveball off reliever Nick Mears to the bleachers in center turn the game around.
Duffy also had three hits and Jason Heyward also went deep as the Cubs won their sixth straight. Duffy had just one homer before Sunday.
Schwindel, who took over at first base in late July after Anthony Rizzo was traded, has gone deep in three straight games and six of seven.
Bryan Reynolds hit a grand slam and had four hits, and Yoshi Tsutsugo also went deep for Pittsburgh, which has dropped sixth straight.
Adbert Alzolay (5-13) pitched a scoreless 1 2/3 innings and Rowan Wick got the final six outs for his third save. Sam Howard (2-4) allowed two runs in one third of an inning for the loss.
Tsutsugo got the homer barrage started with a solo blast in the first to make it 1-0.
Duffy and Heyward led off the second with back-to-back homers to put the Cubs on top.
Reynolds' grand slam - the first of his career - in the third gave Pittsburgh a 5-2 edge, but Chicago answered with five in the bottom half on an RBI single by Ian Happ and Duffy's slam for a 7-5 lead.
Pittsburgh tied it with two runs in the fifth. Jacob Stallings had a sacrifice fly and Gamel, who was hit by a pitch, scored on a wild pitch by Manny Rodriguez with two outs.
The Pirates took advantage of more Cubs miscues in the sixth to take an 8-7 lead.
Reynolds singled with one out, Colin Moran followed with a walk and both advanced on a passed ball. Reynolds scored on an infield single by Stallings.
Gamel appeared to save the game for the Pirates in the seventh when he made a diving catch on the warning track in left on a liner by pinch hitter Willson Contreras with runners on first and second for the second out. But Howard walked Rafael Ortega to load the bases and bring Schwindel to the plate.
