Nico Hoerner hit a tiebreaking double in the eighth inning, and the Chicago Cubs beat the Pittsburgh Pirates 3-2 on Monday night for their season-high fifth straight win.
Hoerner finished with two hits and two RBIs. Rafael Ortega homered for Chicago, and Adrian Sampson pitched seven innings of two-run ball.
Seiya Suzuki set up Hoerner's clutch hit when he reached on rookie shortstop Oneil Cruz's throwing error. Suzuki advanced on Ian Happ's groundout and then hustled home on Hoerner's drive into the gap in right-center.
Mychal Givens (6-2) worked the eighth for the win, and Scott Effross got three outs for his first save in three chances.
Josh VanMeter hit a tying RBI double for the Pirates in the fifth. Cruz singled home a run, and Yerry De Los Santos (0-2) got the loss.
Pittsburgh has dropped two straight and seven of nine overall.
Ortega's fifth homer - a two-out drive to right against JT Brubaker in the third - gave Chicago a 2-1 lead. Ortega also singled in the first, stopping an 0-for-29 slump.
Brubaker allowed eight hits, struck out four and walked two in six innings.
Pittsburgh's Bryse Wilson (1-5, 6.52 ERA) faces fellow right-hander Keegan Thompson (7-4, 3.43 ERA) on Tuesday afternoon in the series finale.