Houston Astros Yainer Diaz, right, celebrates with Cam Smith after his solo home run during the seventh inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros Yainer Diaz hits a solo home run during the seventh inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros relief pitcher AJ Blubaugh (69) delivers during the eighth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros relief pitcher AJ Blubaugh (69) delivers during the eighth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros designated hitter Yordan Alvarez (44) reacts after being intentionally walked during the eighth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros pitcher Enyel de Los Santos (65) delivers during the sixth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
during the sixth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros Christian Walker (8) reacts in the dugout with designated hitter Yordan Alvarez (44) after hitting a solo home run during the fifth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros Christian Walker, right, celebrates with Isaac Paredes after hitting a solo home run during the fifth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros Christian Walker (8) smiles after hitting a solo home run during the fifth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros Christian Walker (8) hits a solo home run during the fifth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros starting pitcher Hunter Brown (58) is seen in the dugout during the fifth inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros left fielder LaMonte Wade Jr. (31) fields a fly ball by Texas Rangers Wyatt Langford during the first inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros starting pitcher Hunter Brown (58) delivers during the first inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
Houston Astros starting pitcher Hunter Brown (58) delivers during the first inning of an MLB baseball game in Houston, Friday, July 31, 2026.
Jason Fochtman/Houston Chronicle
There’s plenty of credit to go around when dissecting a Houston Astros turnaround that saw them go from a club that was 11 games below .500 in late May to the one that went to bed in first place in the American League West on Friday night.
The win that got them there was a thorough 11-2 throttling of the Texas Rangers at Daikin Park and one of the keys was a guy who has been wielding a hot bat in an even hotter summer.
No, we’re not writing about Yordan Alvarez, although the overwhelming MVP favorite added to his Triple Crown quest with two more hits and two more RBIs.
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It’s not even Jeremy Peña who we’re thinking of, although all he did was go 3-for-5 with three RBIs.
How about Yainer Diaz? The catcher who hits all the way down in the seven spot in the order delivered his second straight four-hit night and quietly is starting to put up the kind of offensive numbers that had so many excited about him when he emerged as the team’s everyday starter in 2024.
“Yainer is a grinder,” Peña said after the win. “Yainer is a dude who shows up every single day and puts the work in, prepares, prepares, prepares on both sides of the ball to help the pitchers by calling a great game and to perform at the plate. He’s crushing it. That’s a guy we need to keep going.”
The top of the Astros’ order, led by Peña and Alvarez, has never been a problem. Finding production almost anywhere else had been an issue, especially when things looked dismal in May.
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Things have looked much brighter lately, and against the Rangers, hitters six through nine combined to go 9-for-19 with three RBIs.
“That allows Peña and Yordan to come up with men on base,” Astros manager Joe Espada said. “When we get that contribution from everyone, it’s a completely different offense. The way we came out and played today, that’s the stuff there that I want to see.”
It’s especially what they’ve wanted to see from Diaz.
Acquired as a 22-year-old minor leaguer along with reliever Phil Maton in a trade that sent popular center fielder Myles Straw to the Cleveland Guardians in 2021, Diaz made his big league debut in 2022, then began making an impact in 2023, hitting .282 with what still stands as career-bests 23 home runs and an .846 OPS as he shared time with Martín Maldonado behind the plate. He repeated with a similar 2024, although there was a slight dip in power with a .299 average, 16 home runs and a .766 OPS.
The numbers took another step back last year, and appeared to be back-pedaling further early this year when the entire team — besides Alvarez — seemed to struggle.
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However, Diaz missed six weeks with an oblique injury and ever since he returned in mid-June, his swing has seemed to return. In the 27 games since Diaz came off the injured list, the Astros have gone 23-14 and he has hit .286 (28-for-98) with six home runs and an .821 OPS.
Diaz, who is hitting .261 with a .714 OPS for the season, insists nothing has changed for him physically at the plate, except for the outcome.
“It feels very good,” Diaz said through an interpreter. “Just been doing the same thing and very excited to see the results. Just working day by day to get those results.”
If this Diaz stretch proves to be more than an extended hot streak, he’ll lengthen the lineup and make an Astros offense that already ranks third in the American League in runs scored, even more threatening.
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“Especially when he’s hitting homers, when he’s slugging and hitting the ball in the air, staying away from hitting the ball on the ground,” Espada said. “That’s back-to-back four-hit games for him, right? Excellent, man. We need that contribution. We know when he gets hot, we can get on his shoulders and ride him.”