One September callup we want for each MLB team

Seattle Mariners: Thyago Vieira

As evidenced by their trade for starting pitcher Mike Leake, the Mariners still plan on going for it this season. Acquiring Leake now is also a move with an eye on the future, but Seattle clearly things they have some magic left in them for a run at the Wild Card in 2017. The Mariners rotation has just been decimated by injuries all year long, but they’re also not working with a great bullpen.

With a banged up rotation that often struggles to pitch much deeper than five innings, the Mariners need help in their bullpen if they are going to secure that playoff spot that has eluded the franchise since the magical 2001 season. Thyago Vieira is their top relief prospect and made a brief MLB debut in August.

Vieira went slightly viral after air-mailing a warmup toss in his first MLB game and then very nearly having his head taken off by a Chris Davis line drive on the very first pitch he threw.

Vieira has the hardest fastball in the Mariners organization, topping out at 102 mph. Converting him from a starter to a reliever was a smart move, as Vieira only throws two pitches — fastball and curveball. For someone who throws in the triple digits, Vieira should be getting more strikeouts, and he will need to work on developing more of a wrinkle in his heater.