HOUSTON (Interstat) – Jared Jones pitched five innings of four-hit shutout ball and Ryan O’Hearn homered and drove in three runs as the Pittsburgh Pirates defeated the Houston Astros 5-1 on Thursday night at Daikin Park.

Jones (1-0) struck out four and allowed four hits. Carmen Mlodzinski earned his first save with four innings of relief, allowing one run on four hits while striking out three.

O’Hearn singled in Brandon Lowe in the first inning to give Pittsburgh a 1-0 lead. The Pirates broke the game open with four runs in the sixth. Bryan Reynolds singled in Lowe before O’Hearn followed with a two-run homer, his ninth. Jared Triolo later reached on an error, scoring Nick Gonzales.

Kai-Wei Teng (3-4) took the loss, allowing seven hits and four earned runs over five innings with one strikeout.

Isaac Paredes homered for the Astros in the bottom of the sixth.

Pittsburgh improved to 34-29 while Houston dropped to 28-36. Attendance was 23,136. Time of game was 2:42.