[JoseA]

The surging Chicago Cubs look to extend their season-high winning streak to six games Tuesday night in the opener of a three-game series with the Pittsburgh Pirates at Wrigley Field.

The Cubs' run began when they won the final two games of a three-game set in Pittsburgh (13-17) before returning home and sweeping Washington last weekend. The Cubs (15-14) have won eight of nine overall and are over .500 for the first time since the fifth game of the season.

All three wins over the lowly Nationals were decided by one or two runs, including a 4-3 victory in 10 innings Sunday. The Cubs entered the series with a 2-8 mark in such games.

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