PITTSBURGH (AP) — Woody Williams threw eight shutout innings, a series of excellent Houston defensive plays repeatedly frustrated the Pirates and the Astros finally took a series against Pittsburgh by winning 1-0 Sunday.

Luke Scott, who entered only after star rookie center fielder Hunter Pence sprained his right wrist while batting in the fourth, drove in the only run with a two-out single in the sixth.

Shane Youman (2-2), moved up in the Pirates’ rotation so the struggling John Van Benschoten could skip a start, limited the Astros to four hits over eight innings but still took the loss. Half of Houston’s hits came in the sixth, with Brad Ausmus leading off with the first of his two singles before moving up on a pair of ground outs and scoring on Scott’s single to center.

Pence had the other Houston hit, a single in the first, before he clutched his right wrist in pain after popping up in the fourth inning. X-rays did not reveal any break in the wrist, but the Astros aren’t yet certain when their leading hitter — the rookie has a .330 average — can return to the lineup.