The Mariners confirmed that left-hander James Paxton will join the team in San Diego, but did not announce a corresponding roster move.

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The Mariners will make a roster move on Wednesday before their game at Petco Park against the Padres. The exact details of it aren’t quite known, but team sources confirmed that left-hander James Paxton will join the team in San Diego and is expected to be added to the 25-man roster.

There was no indication of the corresponding roster move.

Updated 11:35 a.m., June 1: The Mariners placed ace Felix Hernandez on the 15-day disabled list with a calf strain. Paxton will start Wednesday’s game at San Diego instead. The rest of this post was written before the M’s announcement


Twitter speculation was rampant when Paxton was scratched from his scheduled start tonight at Cheney Stadium.

Rainiers manager Pat Listach told reporter T.J. Cotterill of the News Tribune, who was staffing the game, that — “I just got a call from Seattle saying ‘Don’t let him start today,’ The reason why – they said ‘He’s not starting for you, he’s doing something alternative.’”

There was immediate social media speculation that Paxton had been traded. But with the Mariners’ starting pitching struggling of late, they aren’t really in a place to trade away starting pitching depth.

Another theory was that there was an injury to Felix Hernandez. There was no indication of that the past few days at Safeco Field since his start.

And there is other thought that the Mariners could option out a position player since there is no designated hitter and have Paxton make a spot start and realign their pitching rotation for the upcoming Rangers series this weekend and then send out Paxton when Ketel Marte returns from the disabled list on June 6.