Swanson connected against Ryan Borucki (1-3) with two out in the sixth inning, giving Chicago a 2-1 lead with a solo drive into the bleachers in left-center.

The Cubs played 13 games decided by one run among their first 65 — one of every five. They have played four in their last six, including each of the last three.

The Pittsburgh Pirates took on the Chicago Cubs on Friday, but tried to attempt a double play that ended up costing them the game.

CHICAGO - There are three things you can count on in life. Death, Taxes, and Ian Happ delivering against the Pittsburgh Pirates (29-44). The Chicago Cubs (44-28

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The Pirates lost to the Cubs 3-2 in 10 innings on Sunday afternoon at Wrigley Field. Left fielder Ian Happ had the walk-off single off David Bednar

Jared Triolo, who entered with a .152 batting average, had two of Pittsburgh’s five hits against him. Triolo drove a leadoff double in the third inning and scored on two groundouts. Valdez’s only other blip came in the fifth, when Triolo had the first of three straight two-out singles against him.

BOTTOM LINE: The Pittsburgh Pirates and Houston Astros play on Thursday with the three-game series tied 1-1. Pittsburgh is 23-39 overall and 14-17 at home. The Pirates are 9-3 in games when they scored at least five runs.

Matthew Boyd threw six quality innings, and Dansby Swanson hit a go-ahead home run in the sixth inning to propel the Chicago Cubs to a 2-1 victory over the visiting Pittsburgh Pirates on Saturday afternoon.