Everything worked out just fine with Tim Federowicz behind the plate with the former AL Cy Young Award winner throwing some of his best breaking pitches all season.
Keuchel struck out seven and allowed only two runs over seven scoreless innings, winning for only the second time in his last nine starts, as the Astros beat the Texas Rangers 5-3.
"Some of the shape it was taking early was really good. (Shin-Soo) Choo leading off the game, anytime you get him to swing and miss at a breaking pitch, it's acting pretty good, and then (Nomar) Mazara struck out looking with a slider away," Keuchel said. "Both of those balls had good action and I knew from the then on if I could establish the fastball in to the lefties, it would be a good day."
Josh Reddick and Tony Kemp homered for the Astros, who are 11-4 this season against their instate division rival, with seven consecutive road wins in the series. Houston is a majors-best 31-14 on the road this season.
Keuchel (5-8) struck out the first four batters he faced, and six of the first seven.
After catcher Brian McCann went on the disabled list and had arthroscopic surgery on his right knee earlier Tuesday, manager A.J. Hinch said Max Stassi would do the bulk of the catching. But Stassi got hit by a pitch batting in the first, and left the game with a bruised right (throwing) wrist before even taking the field on defense.
"I think we avoided a fracture, very good for us," manager A.J. Hinch said. "Got him pretty good in the wrist. Got a welt there, couldn't flex his hand, hand so mobility."
X-rays were negative and Stassi is considered day to day.
Keuchel had only thrown a few bullpens with Federowicz in spring training, and a live BP session, before the catcher was called back from Triple-A Fresno earlier Tuesday.
"The way he handled the game not expecting to play, that was really impressive," Keuchel said.
Choo later walked twice and had two singles to extend his career-best on-base streak to 43 games, the longest in the majors since Atlanta's Freddie Freeman's 46-gamer two years ago. Choo is three games shy of Julio Franco's team record of 46 in a row set 25 years ago.
The Astros used three relievers to get through the eighth. Texas already had a run in before Hector Rondon took over against pinch-hitter Joey Gallo, who worked a 12-pitch at-bat into a two-out walk to load the bases before Robinson Chirinos struck out. Rondon then worked the ninth for his sixth save in eight chances.
Houston went ahead to stay in the first when Yuli Gurriel and Reddick had RBI doubles off Austin Bibens-Dirkx (1-2), who still managed to get through six innings. He struck out four, walked two and hit two batters.
"To get through six in that situation was huge for us," manager Jeff Banister said. "Early on it didn't look that it was going to be the case, a situation where really didn't have a whole lot of sink on the fastball. ... For us to still have an opportunity there through those innings, it was big-time by him."
Astros: SS Carlos Correa, out since June 26 with lower back soreness, has been working out daily in Houston. Hinch said it was uncertain if Correa will be ready to play Friday when eligible to come off the DL. He hadn't gone through any baseball activities yet.
Rangers: RHP Tony Barnette left the game after a 2-1 pitch to Marwin Gonzalez in the eighth. The Rangers said he had a right shoulder strain and would be evaluated further Wednesday. ... 1B Ronald Guzman had two hits and scored twice after being activated from the seven-day concussion DL.
The Astros have homered in 23 consecutive road games, a club record and four from matching the MLB record set by Oakland earlier this season. ... Before Bibens-Dirkx plunked Stassi in the first inning, Rangers pitchers had gone 22 games without hitting a batter -- the longest span for the team since 1998.
DOUBLE DOUBLED UP
Astros leadoff hitter George Springer was in a 3-for-46 slide before a single in the sixth. But he was also doubled off twice on hard lineouts.
Gerrit Cole (9-2) will pitch on regular rest for the Astros after they made a slight tweak in their rotation. Lance McCullers Jr., who was scheduled to start, was instead pushed back to Friday. Rangers lefty Mike Minor (6-4) took a perfect game into the seventh inning of his last start, a win last Wednesday over the San Diego Padres.
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