The Astros placed Diaz (oblique) on the 10-day injured list Tuesday, Brian McTaggart of MLB.com reports.
A left oblique strain caused Diaz to be scratched from the lineup ahead of Monday's contest and will now also prevent him from playing for another 10 days. Christian Vazquez will presumably take over as the Astros' primary catcher while Diaz is on the shelf, and Nick Allen (back) will come off the injured list to claim the open roster spot.
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Astros' Yainer Diaz: Will require IL stint
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Diaz is expected to be placed on the 10-day injured list Tuesday due to a left oblique injury, Brian McTaggart of MLB.com reports.
Diaz was scratched from the starting lineup ahead of Monday's 8-3 loss to the Dodgers due to what had been referred to as a left abdominal injury, but Astros manager Joe Espada clarified after the game that the backstop will miss some time due to an oblique issue. Christian Vazquez can be expected to serve as the primary catcher while Diaz recovers.
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Astros' Yainer Diaz: Late scratch Monday
Rotowire
Diaz (abdomen) has been scratched from Monday's lineup against the Dodgers due to a left abdominal injury, Brian McTaggart of MLB.com reports.
Diaz was initially slated to bat ninth in Monday's series opener, but an abdominal injury will keep him from taking the field. He can be considered day-to-day until the team has more information to share on the severity of his injury.
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Astros' Yainer Diaz: Receiving afternoon off
Rotowire
Diaz is out of the lineup for Sunday's game against the Red Sox.
Diaz will receive a routine day off after starting behind the plate or at designated hitter the last five games. Christian Vazquez will handle catching duties in the series finale in Boston.
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Astros' Yainer Diaz: Out of Friday's lineup
Rotowire
Diaz isn't in the lineup for Friday's game against Seattle.
Diaz will miss a second consecutive start Friday after starting each of Houston's previous five games, going 6-for-21 with four RBI and two runs scored in that span. Christian Vazquez will catch for Tatsuya Imai instead and bat ninth.
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Astros' Yainer Diaz: Resting Wednesday
Rotowire
Diaz is out of the lineup for Wednesday's game against the Rockies.
After starting in each of Houston's last five games, Diaz will get a much-needed breather as the Astros wrap up their series in Colorado with a day game after a night game. Christian Vazquez will handle catching duties Wednesday.
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Astros' Yainer Diaz: Return confirmed
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Diaz (foot) will be the designated hitter Wednesday and will start at catcher in Friday's Grapefruit League game, Matt Kawahara of the Houston Chronicle reports.
Diaz was delayed due to a foot sprain suffered in the Dominican Winter League, but he isn't too far behind, as he's scheduled to catch in a game before the end of February. Cesar Salazar is Diaz's only backup, so there should be ample playing time available for the latter once he puts the foot sprain behind him.
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Astros' Yainer Diaz: Coming back from foot sprain
Rotowire
Diaz is behind schedule with his running program after suffering a left foot sprain during the Dominican Winter League, Chandler Rome of The Athletic reports.
Diaz is participating in other baseball activities and will catch Tatsuya Imai's bullpen session Wednesday, but he's a tad behind with his running. It does not sound like an injury that will sideline Diaz long, but the Astros could hold him out of the first handful of Grapefruit League games just to be safe.
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Astros' Yainer Diaz: Wins arbitration case
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Diaz will make $4.5 million in 2026 after winning his arbitration hearing with the Astros on Tuesday, Francys Romero of BeisbolFR.com reports.
Diaz slashed .256/.284/.417 in 2025 while tallying 20 homers, 70 RBI and 56 runs scored across 567 plate appearances. His success ultimately led to the arbitration panel choosing his $4.5 million figure over the $3 million that the Astros submitted. The 27-year-old backstop is expected to continue playing nearly every day in 2026 and has two years of arbitration eligibility remaining.
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Astros' Yainer Diaz: Smacks homer in season finale
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Diaz went 2-for-5 with a solo home run and an RBI single during the Astros' 6-2 win over the Angels on Sunday.
Diaz got Sunday's scoring started with an RBI single in the first inning before giving the Astros a 2-1 lead with a solo shot in the fifth. His long shot was his 20th of the season, and he has reached the 20-homer mark in two of the last three years. With the Astros eliminated from playoff contention, Diaz will end the year with a .256/.284/.417 slash line with one steal, 56 runs, 25 doubles and 70 RBI over 567 plate appearances.
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Astros' Yainer Diaz: Sitting Thursday
Rotowire
Diaz isn't in the lineup for Thursday's game against the Athletics, Brian McTaggart of MLB.com reports.
Diaz will sit down for Thursday's series finale after going 1-for-7 with two strikeouts over the first two games. Victor Caratini will replace him behind the plate and bat fourth.
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Astros' Yainer Diaz: Knocks in two
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Diaz went 1-for-3 with two RBI on Wednesday against the Rangers.
Diaz delivered a two-run single in the first inning to start the scoring for Houston. He's been excellent at the plate in his last 10 games, hitting .351 with one home run, 12 RBI and four runs scored.
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Astros' Yainer Diaz: Resting Friday
Rotowire
Diaz is out of the lineup for Friday's game against Atlanta.
Diaz will take a seat Friday after making five consecutive starts behind the plate, allowing Victor Caratini to catch. Diaz has logged multiple hits in three of his last five games.
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Astros' Yainer Diaz: RBI in three straight games
Rotowire
Diaz went 3-for-4 with a double and an RBI on Tuesday against the Blue Jays.
Diaz has performed well in September, collecting at least one hit in five of his eight starts while also tallying four doubles. He's hit particularly well since the start of Houston's weekend series against the Rangers, going 5-for-14 with five RBI and a run scored in his last three starts.
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Astros' Yainer Diaz: Knocks in three
Rotowire
Diaz went 2-for-5 with a double, three RBI and a run scored Saturday against the Rangers.
Diaz delivered an RBI double in the sixth inning and followed that up with a single that plated two in the eighth frame. This marked his first multi-hit effort in his last eight starts, though he has managed four extra-base hits in that span (all doubles). Diaz has also come through with timely hits lately, producing 15 RBI across his last 29 starts.
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Astros' Yainer Diaz: Resting Friday
Rotowire
Diaz is not in the Astros' starting lineup against the Rangers on Friday, Matt Kawahara of the Houston Chronicle reports.
Diaz will get a rest day while Victor Caratini starts behind home plate and bats seventh. Diaz has gone 8-for-38 (.211) with three doubles, one home run and three RBI over his last 10 games.
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Astros' Yainer Diaz: Remaining out of starting nine
Rotowire
Diaz (hand) is out of the lineup for Thursday's game against the Rockies, Matt Kawahara of the Houston Chronicle reports.
Diaz will be held out of the starting nine for the third game in a row while he manages a hand injury. Cesar Salazar will get the nod behind the plate in place of Diaz, who can be considered day-to-day heading into the Astros' weekend series with the Angels.
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Astros' Yainer Diaz: Battling hand issue
Rotowire
Diaz is out of the lineup for Wednesday's game against the Rockies due to a hand injury, Chandler Rome of The Athletic reports.
The 25-year-old was withheld from the lineup for Tuesday's contest and will sit for a second straight game due to the injury. With Diaz down and Victor Caratini in the concussion protocol, Cesar Salazar was promoted from Triple-A Sugar Land and will get the start behind the plate Wednesday.
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Astros' Yainer Diaz: Getting rare rest Saturday
Rotowire
Diaz is not part of the starting lineup Saturday versus the Orioles.
This will be Diaz's first day off since Aug. 10, as he's been working as Houston's DH on days when he doesn't start behind the plate. He's done fine with a .279 batting average, two homers and five RBI in the 11 games since his last day out of the lineup, so his absence Saturday seems to be simply a rest day. Victor Caratini is behind the plate for the Astros on Saturday, while Jose Altuve is getting a turn at DH.
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Astros' Yainer Diaz: Goes yard Thursday
Rotowire
Diaz went 1-for-5 with a two-run home run in Thursday's 7-2 win over the Orioles.
Diaz provided the Astros' last runs of the game in the third inning. He's been fairly steady of late, going 11-for-35 (.314) with two homers and five RBI over his last nine games. For the season, the catcher is up to 18 homers, 55 RBI, 46 runs scored, one stolen base and a .254/.283/.419 slash line across 114 games.
