ARLINGTON, Texas —
Cole got out of a self-induced jam in the sixth after consecutive walks to Elvis Andrus and Alex Rios, his only walks in the game. Andrus got his 38th career stolen base — the Rangers pulled off a double steal when Rios reached before Adrian Beltre grounded out.
"The sixth inning could have gotten out of hand," Cole said. "I was just able to get the ball down on them."
Tony Watson pitched a perfect eighth, his 14th consecutive scoreless outing. Mark Melancon worked the ninth for his 12th save in 14th chances to close out Pittsburgh's 16th shutout of the season.
The Rangers said Darvish started feeling the cramps during the seventh. There was a short delay after the Rangers took the field in the eighth before Tanner Scheppers came out of the bullpen.
"It's minor," Washington said. "No level of concern."
NOTES: It was the 14th 1-0 game ever at Rangers Ballpark, which is in its 20th season. It was the second this season, both Rangers losses. ... Pirates CF Andrew McCutchen had a leadoff triple in the ninth. He was thrown out trying to score on Justin Morneau's chopper to second baseman Ian Kinsler. ... Rangers LF Jim Adduci left the game after his at-bat in the fifth inning, when he sustained a right biceps strain while striking out. ... Darvish upped his major league-leading strikeout total to 246. ... Beltre was 1 for 22 over six games before his two-out single in the ninth.