Matt Brash is by far the most likely of the three to be called up to the big leagues before the end of the 2021 season. Having already pitched an entire season of lights-out minor league ball as a starter, it is entirely possible the M’s call him up to pitch out of the bullpen in a pivotal game. Most minor leaguers’ stuff doesn’t translate to the big league bullpen. Brash is not most minor leaguers. Pumping upper-90’s fastballs with a frisbee slider and disgusting changeup, there is little concern for Brash’s stuff translating to the big league bullpen.
He’s shown the ability to strike people out at an alarming rate and control the walks. He’s had enough seasoning in the minors to be featured highly on prospect rankings. He’s even been promoted to Triple-A Tacoma. Nothing stands in the way of Matt Brash and the Mariner’s 2021 big league team.