We aren't that far into the season. It's a Saturday morning, and the Mariners have only played 8 games so far. Normally, I'm a pretty level-headed guy and not prone to overreacting... but let's go for it here. There were a handful of players on the Mariners that we didn't even want to break camp with the team and some that are struggling already through the start of the series in Chicago.
These Three Mariners could easily be off the roster by May
Tommy La Stella gave Mariners fans a bad taste when he was signed, as it wasn't a move that anyone wanted to see. He's been struggling early in limited appearances going 1-9 with a double, but looking iffy at the plate otherwise. Mason McCoy and Colin Moran are sitting in the minors ready for a shot, and Dylan Moore is coming back soon (hopefully). If La Stella doesn't start hitting at a .270 clip soon, I can definitely see the Mariners letting him walk.
Cooper Hummel hasn't done much since being acquired for Kyle Lewis, unfortunately. He's 1-11, and hasn't looked impressive at the plate. There is a chance that they still keep him around as the backup catcher and decide to move on from Tom Murphy instead, but Murphy has a lot more experience, and it would be realstic to see him break out of an early slump than it would be for Hummell to produce for the first time at the Major League Level.
I was going to put JB Bukauskas in here, but he was optioned to AAA on April 10th. So there goes that option. In his place, I begrugingly am going to go with Matt Festa. He has really struggled with his accuracy so far early in the season, walking six hitters through just 3.1 IP. The Mariners have a bunch of hungry young arms in the minors. If Festa continues to struggle with his accuracy, maybe we see a hopeful reboot in AAA from him while giving someone else a shot in the bigs.