Jonathan Hernandez. Steven Bisig-USA TODAY Sports

The Mariners announced a quartet of roster moves Thursday, including the news that right-hander Jonathan Hernandez has been designated for assignment. 

Infielder Jason Vosler was also optioned to Triple-A Tacoma, while outfielder Dominic Canzone was reinstated from the 10-day injured list and righty Eduard Bazardo was called up from Triple-A.

Hernandez hits the DFA wire for the second time in just over a week, as the Rangers’ decision to designate the reliever led the Mariners to make a waiver claim. Hernandez has already made three appearances in a Seattle uniform, but after throwing scoreless innings in his first two outings, he was charged with three earned runs in just one-third of an inning in the Mariners’ 6-2 loss to the Tigers Wednesday.

Because Hernandez is out of minor league options, the M’s had to designate him and thus again expose him to waivers in order to bring Bazardo’s fresh arm into the bullpen mix. If he clears waivers and is outrighted off Seattle’s 40-man roster, Hernandez doesn’t yet have enough MLB service time to reject such an assignment in favor of free agency, nor has he been previously outrighted during his career.

Over 43 1/3 combined innings with Texas and Seattle this season, Hernandez has a 5.40 ERA, 20.3% strikeout rate, and an ugly 14.6% walk rate. The latter number is one of the worst walk rates of any pitcher in baseball, underlining the control problems that have marked much of Hernandez’s five-season run in the big leagues. 

He was able to keep things in check for long enough to post a 2.93 ERA over 61 1/3 innings for the Rangers during the 2020 and 2022 seasons, with the 2021 campaign a complete write-off while Hernandez was recovering from Tommy John surgery.

Though the 2023 season was also a struggle for the righty, Hernandez’s 2022 success is recent enough that another team in need of bullpen help could be willing to put in a waiver claim and bet on a turn-around. Hernandez turned 28 last month, and he is still arbitration-controlled through the 2026 season. 

Earning a $1.245M salary this year, Hernandez still has about $363K remaining, and a new team would owe only the prorated portion of the average MLB salary. The Mariners also paid only a prorated average rate during Hernandez’s brief time on the active roster, as the Rangers are covering the bulk of the remaining money.

Canzone last played on July 9, so he’s back after almost exactly a month recovering from a right adductor strain. Between that absence and a prior IL stint due to a left AC joint sprain, Canzone has been limited to 54 games and 159 plate appearances this season, hitting .211/.289/.394 with seven homers. 

Canzone’s left-handed bat can come off the bench and help balance out a Mariners lineup that mostly tilts to the right side, and he is a solid defender at all three outfield positions.

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