The Mariners optioned Diaz to Triple-A Tacoma on Tuesday.
Diaz didn't appear in a game after being recalled from the minors last week, and he'll now be sent back down in favor of Casey Lawrence. The 28-year-old Diaz has turned in a 5.87 ERA and 1.49 WHIP across 30.2 innings at Tacoma.
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Mariners' Jhonathan Diaz: Rejoins big club
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The Mariners recalled Diaz from Triple-A Tacoma on Wednesday.
Diaz will link up with the big club for the second time this season, after he previously made a 1.1-inning relief appearance April 1 against the Tigers before being demoted a day later. Since then, Diaz has been getting stretched out a starter at Tacoma and had produced a 5.87 ERA, 1.49 WHIP and 27:10 K:BB over 30.2 innings. Diaz could be available in relief for Wednesday's game against the Yankees, but if he ends up going unused, he might be an option to make a spot start this weekend in San Diego. The Mariners have an opening in the rotation after Bryce Miller (elbow) was placed on the 15-day injured list in a corresponding move.
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Mariners' Jhonathan Diaz: Optioned to Triple-A
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The Mariners optioned Diaz to Triple-A Tacoma on Wednesday.
Diaz made his one appearance for Seattle on Tuesday and allowed no runs on one hit with a strikeout in 1.1 innings. The southpaw has made the bulk of his appearances for Tacoma as a starter and figured to get a shot at securing a rotation spot in place of the injured George Kirby (shoulder), but he'll instead return to the minors after a relief appearance. Luis F. Castillo is expected to be promoted from Triple-A Tacoma to make his first career start Friday.
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Mariners' Jhonathan Diaz: Called up from Triple-A
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The Mariners selected Diaz 's contract from Triple-A Tacoma on Tuesday.
Seattle optioned right-hander Emerson Hancock to Triple-A in a corresponding move, creating an opening in the rotation until George Kirby (shoulder) is ready to return from the injured list. Though Diaz will give the Mariners a fresh arm out of the bullpen in the short term, he could be a candidate to fill the vacant rotation spot if he's had sufficient rest by the time Seattle next requires a fifth starter. Diaz previously started in 23 of his 24 appearances for Tacoma in 2024, logging a 4.73 ERA, 1.52 WHIP and 120:54 K:BB over 118 innings.
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Mariners' Jhonathan Diaz: Heading to minor-league camp
Rotowire
The Mariners reassigned Diaz to minor-league camp Monday.
Diaz has been getting stretched out as a starter during spring training, but he wasn't in contention for a spot in Seattle's Opening Day rotation, even with the Mariners set to begin the campaign without George Kirby (shoulder). Emerson Hancock is expected to get the first crack at replacing Kirby, but Diaz could be among the next pitchers in line to make spot starts if the Mariners lose another rotation member to an injury. Diaz will continue to make regular turns through the rotation at Triple-A Tacoma until he might be needed by the big club.
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Mariners' Jhonathan Diaz: Joins camp as NRI
Rotowire
Diaz agreed Wednesday with the Mariners on a minor-league contract that includes an invitation to spring training, Ryan Divish of The Seattle Times reports.
Seattle removed Diaz from its 40-man roster earlier this month, and after he elected free agency upon clearing waivers, the 28-year-old will now rejoin the Mariners for the start of spring training. He'll presumably get the opportunity to compete for a spot in the Opening Day bullpen as a long reliever. The Mariners boast a talented rotation that has all five members healthy heading into spring training, but Diaz's prior big-league starting experience could put him high on the list for spot starts if injuries in the rotation stack up at any point. He made five appearances (one start) for Seattle in 2024, covering 9.2 innings and allowing five earned runs on 14 hits and three walks while striking out eight.
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Jhonathan Diaz: Enters open market
Rotowire
Diaz cleared waivers Friday and elected to become a free agent.
Diaz ended up as the Mariners' roster casualty following the acquisition of Casey Legumina. After going unclaimed off waivers, Diaz will now exercise his right to leave the organization and explore other options. The 28-year-old righty owns a 4.80 ERA and 1.73 WHIP across 45 career MLB innings.
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Mariners' Jhonathan Diaz: Removed from 40-man roster
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The Mariners designated Diaz for assignment Monday.
The transaction clears a spot on the 40-man roster for the addition of Casey Legumina. Diaz, 28, has been unimpressive over parts of four big-league seasons, compiling a 4.80 ERA and 32:27 K:BB across 45 innings. He should stand a good chance of passing through waivers unclaimed.
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Mariners' Jhonathan Diaz: Sent to minors
Rotowire
The Mariners optioned Diaz to their spring training complex Monday.
The move makes room on the Mariners' 28-man active roster for right-handed reliever Gregory Santos (biceps), who was reinstated from the 15-day injured list. Diaz had made two appearances for the big club since being recalled Sept. 1, allowing one hit and one walk while striking out three over 3.1 scoreless innings.
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Mariners' Jhonathan Diaz: Moves up from Triple-A
Rotowire
The Mariners recalled Diaz from Triple-A Tacoma prior to Sunday's 3-2 loss to the Angels.
Diaz had started in all but one of his 24 appearances for Tacoma this season, logging a 4.73 ERA and 120:54 K:BB in 118 innings. With all five of the Mariners' starting pitchers healthy at the moment and new manager Dan Wilson having yet to express a desire to move to a six-man rotation, Diaz looks like he'll serve as a long-relief option for now.
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Mariners' Jhonathan Diaz: Dispatched to Tacoma
Rotowire
The Mariners optioned Diaz to Triple-A Tacoma on Saturday.
Diaz gave up two earned runs in his two appearances after being promoted from Triple-A on Tuesday. He'll now lose his spot in Seattle's bullpen to make room for Jonathan Hernandez, who was claimed off waivers from Texas on Friday.
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Mariners' Jhonathan Diaz: Takes loss in extras
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Diaz (0-1) took the extra-inning loss against the Red Sox on Wednesday, allowing an unearned run on one hit over one-third of an inning.
Diaz's first outing of his current big-league tenure, which just began Tuesday, lasted all of three pitches, as he surrendered a game-winning RBI double to Rafael Devers that plated automatic runner Tyler O'Neill. The southpaw has only one other appearance at the big-league level this season, having made a spot start against the White Sox back on June 11. While Diaz did see high-leverage work Wednesday, that's an outlier largely the byproduct of Andres Munoz and Yimi Garcia having been worked heavily over the past few days.
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Mariners' Jhonathan Diaz: Summoned from minors
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The Mariners recalled Diaz from Triple-A Tacoma on Tuesday.
Diaz will take Gabe Speier's spot on the 26-man roster, marking Diaz's second MLB stint of the season. The 27-year-old's lone appearance with the Mariners came in June when he allowed three runs on nine hits in 5.1 innings as a starter. He's expected to serve out of the bullpen during this stint but could be called upon if the Mariners need a last-second starter. In 18 Triple-A outings (17 starts), Diaz has a 3.88 ERA with a 95:42 K:BB during 97.1 innings.
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Mariners' Jhonathan Diaz: Recalled from Triple-A
Rotowire
The Mariners recalled Diaz from Triple-A Tacoma on Friday.
Since being sent down to Triple-A, Diaz has allowed eight runs (six earned) in 11 innings across two starts. The 27-year-old allowed three runs to come across the plate during his spot start against the White Sox in June 11, and he'll presumably join the Mariners' rotation temporarily while Bryan Woo (hamstring) is on the injured list. Cody Bolton was optioned to Triple-A in a corresponding move.
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Mariners' Jhonathan Diaz: Sent down to minors
Rotowire
The Mariners optioned Diaz to Triple-A Tacoma on Wednesday.
Diaz made a spot start in Tuesday's 4-3 loss to the White Sox in place of the injured Bryan Woo (arm), allowing three runs over 5.1 innings in a no-decision. Woo's status remains in limbo, and Diaz could be considered for a call-up if Woo ends up landing on the injured list before his next turn through the rotation comes up.
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Mariners' Jhonathan Diaz: Added to 40-man roster
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The Mariners added Diaz to their 40-man roster Wednesday, Daniel Kramer of MLB.com reports.
Diaz got off to a hot start at Triple-A Tacoma, allowing just one earned run while striking out 27 batters across 24 frames through his first four outings. He has since slowed down, but the 27-year-old southpaw still holds a solid 3.18 ERA and 1.10 WHIP alongside a 55:9 K:BB through 51 innings. He will remain in the minors for the time being, but continued success could allow him to make his Mariners debut later this summer -- likely as a long reliever.
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Mariners' Jhonathan Diaz: Inks minors pact with Seattle
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Diaz has signed a minor-league contract with the Mariners, Matt Eddy of Baseball America reports.
Diaz, 27, holds a 4.84 ERA and 24:24 K:BB over 35.1 frames covering parts of three seasons at the big-league level. The left-hander has experience as a starter and reliever and is likely headed to Triple-A Tacoma at the beginning of the 2024 season.
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Angels' Jhonathan Diaz: Loses 40-man roster spot
Rotowire
Diaz cleared waivers and was outrighted to Triple-A Salt Lake on Monday, Jeff Fletcher of The Orange County Register reports.
The Angels are doing some 40-man roster housecleaning and Diaz is one of the guys to lose his spot. He will remain in the organization.
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Angels' Jhonathan Diaz: Optioned to Triple-A
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The Angels optioned Diaz to Triple-A Salt Lake on Saturday, Jeff Fletcher of The Orange County Register reports.
With Jaime Barria (hamstring) returning from the injured list Saturday, Diaz will be squeezed off the major-league roster. The 27-year-old lefty gave up eight runs in seven innings during his stint with the Angels while striking out four batters and walking seven.
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Angels' Jhonathan Diaz: Promoted to majors for start
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The Angels recalled Diaz from Triple-A Salt Lake to start Thursday against the Guardians, Jeff Fletcher of The Orange County Register reports.
Diaz has spent all season with Salt Lake, putting up a 4.55 ERA and 1.44 WHIP through 87 innings -- primarily as a multi-inning reliever. He had a solid run with the Angels last season to the tune of a 2.93 ERA over 15.1 frames, and the team will hope to get similar production out of Diaz as he faces a Guardians offense that ranks 27th in baseball with a .689 OPS. Gerardo Reyes was optioned to Triple-A in a corresponding move.
