Pittsburgh, PA (Sports Network) - Justin Morneau drove in the winning run in the eighth inning as the Pittsburgh Pirates took a 3-2 win over the Chicago Cubs on Sunday to wrap up a four-game set.

Pittsburgh and St. Louis remain tied for first place in the NL Central as the Cardinals defeated the Mariners on Sunday.

Tony Sanchez hit a solo home run for the Pirates, who have won six of their last seven games.

Francisco Liriano pitched into the seventh and was charged with two runs on three hits with four walks and four strikeouts. Kyle Farnsworth (1-0) pitched a scoreless eighth inning to get the win.

Welington Castillo hit a two-run home run for the Cubs, who have lost four of their last five. Travis Wood lasted six innings in the start and gave up two runs on five hits. Pedro Strop (2-2) was handed the loss.

In the eighth, Andrew McCutchen was hit by a pitch with one out and moved to second on Marlon Byrd's single. Morneau then hit a pinch-hit single to left for a 3-2 lead.

Mark Melancon pitched a 1-2-3 ninth to pick up his 16th save of the season.

Jose Tabata led off the Pittsburgh first with a triple and quickly scored on a wild pitch from Wood.

Sanchez led off the fourth with his second home run, a shot over the right- center wall.

Chicago, though, tied the game in the seventh as Junior Lake led off with a single and Castillo followed with his seventh home run of the year.