Mariners: Trades they could make to upgrade the Pitching Staff

Trade Values: Mariners receive 63.8 – Diamondbacks receive 48.1

This would be a massive move for the Mariners. It would be odd to send Haniger back to the Diamondbacks since that is who they originally acquired him from back in the Haniger/Segura for Walker/Marte deal. We’ve seen much weirder things though.

Brandon Willaimson is a stud who has been moving up the Mariners farm system this season, and actually through an immaculate inning in his first AA start. We would have to give up a solid prospect, along with talent, to get someone like Gallen.

You might be wondering why we would need to give up so much. There are two answers. One, Gallen is just 25, and already has thrown in three seasons while compiling an ERA of 2.97 in 191 innings. Two, he is under team control through 2025 still. If he is a top of the rotation starter, which most indicators show, he is an incredible asset and player to have.

Would Arizona do it? We might have to include a younger player than Haniger, as he wouldn’t provide much in the way of future value, at least to a team that went 2-31 over a stretch this season. Haniger is younger than his age because of the time he has missed from his odd injuries and could be a veteran leader from them, so it’s still plausible.

He’s seemed fairly consistent throughout his time in the majors, with a good K rate of 10.5, and a FIP around 3.6. Putting Gallen with the rest of the Mariners youth at pitching could make for an incredible core that would be around for years to come. Gilbert, Hancock, Kirby, Gallen? Sign me up.