5 Mariners Pitchers to Keep an Eye on at 2023 Spring Training

The Mariners have so many exciting young players, that I had to split them up between hitters and pitchers. This isn’t even talking about the ones that we are certain will be on the big league roster to start the year. So no mention of Gilbert, Kirby, Haggerty, Kelenic, or Julio. This is solely about the guys on the back end of the 40-man roster and the ones who received invites to Spring Training. The ones who head to Peoria look to take advantage of the playing time and competition to showcase themselves to upper management.

It’s amazing to think that the Mariners have already promoted two starting pitchers that have seen success, and they still have a loaded system full of strong arms that are getting close to seeing time at the big league level. It wouldn’t surprise to see Gilbert and Kirby move to the Mariners and then have a lull in the Minors before the next wave comes along. That’s not the case with the Mariners.

There are a bunch of players that are getting close, and with a weaker starting rotation, the Mariners would likely entertain a couple of these guys on the big league roster, even in their rotation. Unfortunately for them, there is only one spot available, and there are already two MLB veterans fighting for it. However, I still think there are plenty of pitchers for the Mariners that we should keep on eye on as Spring Training kicks off. No Emerson Hancock, as I’d rather showcase some of either the more exciting guys or lesser known guys.

Mariners 40-man Pitchers to watch

Isaiah Campbell (25 Years old - RH Reliever) is a converted starter, much like many think is going to be the case with the next guy on the list. After switching it up, Campbell found a ton of success in the bullpen in 2022. He's joined the MLB group in featuring a slider as a strong part of his arsenal and saw an incredible strikeout rate of 11.5, but 16.6 in AA in 13 innings.

Those 13 innings are the only ones Campbell has seen at AA or higher, but the expectation is still high with him to get a shot in 2023 with the Mariners. He's going to get a good look alongside Sadler and some of the other MLB relievers fighting for a spot, and a good opportunity to throw in a bunch of Spring Training games.

Prelander Berroa (22 Years old - RH Starter currently) was acquired by the Mariners in 2022 in exchange for UTIL Donovan Walton (miss that guy). Originally barely on the top 30 prospects list, Berroa has skyrocketed since coming to Seattle. He has electric stuff but massive control issues, walking more batters (63) than allowing hits (54) in his 100.2 IP in 2022.

The control is a big reason that he might turn into a reliever. With a fastball in the mid to upper 90s that can actually touch 102 and a devastating plus-plus slider that touches 90 mph, the stuff is NSFW disgusting. Harnessing that for an inning or two could be the way to success, and seeing what the Mariners do with him in ST should be telling.