AP Sports Writer
HOUSTON (AP) -- Bo Porter knows there will be some growing pains in managing the youngest team in the majors.
Still, a mistake by Matt Dominguez in Houston's 5-1 loss to the Kansas City Royals on Thursday night really got to him.
The Astros trailed 5-0 when Chris Carter drew a leadoff walk in the fifth. Carter advanced to third on a single by Dominguez, but Dominguez was out trying to stretch it into a double.
Porter was clearly frustrated when asked if he wishes Dominguez would have been more cautious on the play, pausing 18 seconds before answering the question.
"It's just not smart, obviously," Porter said. "And sorry for taking so long to answer the question. I went and asked Matt Dominguez: 'Do you think you're invisible? You are down 5-0 and the ball is right in front of you.' So, to answer your question, no, I don't like it. There was nothing smart about it, and next question."
Dominguez took responsibility for his blunder.
"Just bad base-running," he said. "Down by five, something that can't happen, and I realize it. I wish I could take it back. It's just stuff that can't happen."
James Shields struck out 12 in eight innings and the Royals completed a three-game sweep with the victory.
Shields (1-2) gave up one run and four hits, all singles. He struck out seven straight batters in the late innings.
The right-hander got back to his winning ways after seeing his nine-game road victory streak snapped in his last start at Minnesota when sloppy defense led to six unearned runs in a 7-1 loss.
Scott Feldman (2-1) yielded four earned runs and nine hits in six innings. It was the first tough outing for the Astros newcomer after he had allowed just one run and seven hits combined in his first three starts.
"It seems like they found a lot of holes," Feldman said. "They're a tough lineup, for sure."
The Royals were up by two when Alcides Escobar hit a two-run double in the fourth to make it 4-0. Salvador Perez added an RBI double in the fifth.
Kansas City scored 15 runs in this series after managing just five runs combined last weekend while getting swept by the Twins.
The Royals got to Feldman early, with Nori Aoki hitting a leadoff double and later scoring on a groundout by Eric Hosmer.
Alex Gordon, Billy Butler and Mike Moustakas hit consecutive singles to start the second to push the lead to 2-0.
There were runners at second and third with one out in the fourth when Escobar sent them both home with a double to center field.
Aoki singled to begin the fifth before a one-out single by Hosmer. Perez hit a ball that diving center fielder Dexter Fowler missed for a double that scored Aoki and pushed the lead to 5-0. Hosmer was out at home on the play.
Shields allowed a pair of singles in the first inning before retiring the next 10 Astros. Houston didn't have another baserunner until Carter's walk to start Houston's fifth.
Carter scored on a sacrifice fly by Alex Presley to cut the lead to 5-1.
Presley was the first of nine straight Astros retired by Shields, including seven strikeouts in a row.
A single by Presley came with one out in the eighth and Jonathan Villar drew a walk, but Shields ended the threat by striking out Fowler before a fly out by George Springer.
NOTES: The Royals challenged a call after Presley was called safe on a grounder in the second inning. The play was overturned for the third out of the inning. ... Royals LHP Bruce Chen, who was scratched from Thursday's start a day before with a sore back, was feeling better Thursday and expects to be ready to start on Saturday. ... Kansas City OF Lorenzo Cain was placed on the 15-day disabled list with a left groin strain and LHP Justin Marks was recalled from Triple-A Omaha to take his place on the roster. ... Houston selected the contract of LHP Raul Valdes from Triple-A Oklahoma City and optioned LHP Kevin Chapman there before Thursday's game.
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