Gallen allowed six hits in six innings, striking out six.

Jose Altuve had his first extra-base hit since Aug. 22, a span of 42 at-bats, with a double into the right-center field gap in the seventh inning. Altuve entered Friday hitting .216.

The Astros have lost 11 of their last 15 and fell to 25-26.

“You’ve got to go with the guys that have been there, you’ve got to go with the guys that have got you here,” Astros manager Dusty Baker said. “It’s a daily game. Tomorrow could be totally different. You’ve got to go with your core guys — you have to.”

The Astros and Diamondbacks had a pregame moment of silence for Johan Maya, a longtime minor league coach and scout for both organizations. Maya, who spent 15 years with the Astros before joining the Diamondbacks in 2019, died at age 40 of COVID-19 in July.

Calhoun’s first homer was estimated just 382 feet, and he wasn’t too concerned that that estimate might have been on the short side.

“As long as it went over the yellow line, I don’t really care,” he said.

“He’s interesting to watch, that’s for sure. He does it really differently and that’s pretty cool. He marches to the beat of his own drum, and he’s been doing it for a long time so he’s obviously got something figured out.” — Gallen on Greinke