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Diaz (oblique) is starting a minor-league rehab assignment Tuesday, Chandler Rome of The Athletic reports.
The 27-year-old has been on the injured list since early May due to an oblique strain, but he's been cleared for game action after ramping up his baseball activities. Diaz had a poor start to the season offensively with a .602 OPS through 26 games, and Christian Vazquez's superior work behind the plate could mean that the Astros deploy a more even split of playing time at catcher, per Rome.
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Astros' Yainer Diaz: Could start rehab assignment soon
Rotowire
Diaz (oblique) has been hitting, throwing and catching bullpen sessions during workouts this week and is close to heading out on a rehab assignment, MLB.com reports.
The Astros haven't offered up an official timeline for Diaz's return from the left oblique strain that sent him to the injured list May 5, but if he's cleared to join a minor-league affiliate within the next few days, he could have a realistic shot at rejoining the big club by the middle of June. Since Diaz was deactivated, Christian Vazquez has taken over as the Astros' No. 1 catcher, with Cesar Salazar serving as Vazquez's backup.
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Astros' Yainer Diaz: Moving closer to rehab assignment
Rotowire
Astros general manager Dana Brown said Sunday that Diaz (oblique) is expected to begin a rehab assignment during the first week of June, Brian McTaggart of MLB.com reports.
Per MLB.com, Diaz is in the midst of a running and hitting progression as he works his way back from a left oblique strain, which sent him to the injured list May 5. He looks as though he could be ready to hit against live pitching at some point during the upcoming week, and if all goes well, the Astros could map out a rehab assignment for the 27-year-old backstop soon thereafter. Christian Vazquez has been serving as Houston's primary catcher since Diaz hit the shelf.
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.
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.
Diaz isn't in the Astros' lineup Sunday against the Yankees, Brian McTaggart of MLB.com reports.
He'll begin on the bench with Christian Vazquez doing the catching. Diaz is in the midst of a five-game hitting streak, during which he's gone 6-for-20 with a home run, two doubles and three RBI.
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Astros' Yainer Diaz: Homers in loss
Rotowire
Diaz went 2-for-4 with a solo home run and an RBI single in Friday's 12-4 loss to the Yankees.
Diaz was a bright spot on an otherwise rough evening for Houston. The catcher got the Astros on the board with a two-out, RBI single in the second inning before launching his second home run of the season in the seventh. Diaz is slowly starting to heat up after a slow start to the year -- he has at least one hit in each of his last four contests, going 5-for-16 (.313) with three extra-base hits in that span. Overall, Diaz is batting .213 with a .571 OPS, 12 RBI and three runs scored through his first 80 plate appearances in 2026.
Diaz is out of the lineup for Wednesday's game against the Guardians, Matt Kawahara of the Houston Chronicle reports.
Christian Vazquez will receive a turn behind the dish for the matinee game while Diaz rests after catching each of the Astros' last three contests. Diaz recorded a hit in each of those games, but he's still been a disappointment for fantasy managers through the first four weeks of the season with a .197 average, one home run, 10 RBI and five runs over 18 games.
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Astros' Yainer Diaz: Idle Saturday
Rotowire
Diaz is not in the Astros' starting lineup against the Cardinals on Saturday.
Diaz will take a seat after starting in both of the Astros' last two games, going 0-for-8 with two strikeouts in that span. Christian Vazquez bat eighth while doing the catching for Lance McCullers.
Diaz is out of the lineup for Tuesday's game against the Rockies, Matt Kawahara of the Houston Chronicle reports.
Diaz started the previous three games and will receive a day off after going 2-for-11 with a solo homer and an additional RBI during that stretch. Christian Vazquez will work behind the plate and bat ninth versus Colorado righty Michael Lorenzen.
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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.
