Dylan Cease got an MRI on his shoulder last night, and he won't start Wednesday.

Cease is currently in Toronto, separate from the rest of the team, and will meet the club in Baltimore afterward.

He described the shoulder as feeling "fatigued," a term that could mean anything from normal late-season wear to something requiring closer attention.

That word choice matters given how much Toronto has relied on him all season. He's been the one true constant in a rotation that's absorbed injury after injury.

Manager John Schneider isn't ruling out a start against the Reds, leaving real uncertainty about how quickly Cease might return once results from the imaging come back.

Why the timing makes this especially nerve-wracking

Toronto is fighting for its playoff life with a handful of games left, making any absence from its best starter a genuine concern regardless of severity.

An MRI itself doesn't confirm anything serious on its own, but the fact that one was ordered signals the club wanted real clarity before making any decisions about his next outing.

Cease has carried this rotation through a season defined by injuries to nearly every other starter, from Jose Berrios and Bowden Francis to Jameson Taillon and Shane Bieber.

Losing him, even briefly, removes Toronto's most reliable performance in a lineup card that's had few certainties all year.

There's no word yet on what the imaging actually revealed, or whether "fatigued" ends up meaning a short absence or something that lingers into the final stretch.

Toronto's front office and medical staff will need to balance protecting Cease long-term against the reality of a playoff race with almost no games left to spare.

Whether he's ready for the Reds series, or this pushes his next outing back further, should become clearer once more details on the MRI come out.