Fletcher started his career at the University of Houston with a successful turn in the bullpen as a freshman, but ended up needing Tommy John surgery in his sophomore year. He closed as a redshirt sophomore then moved to the rotation in 2018 and pitched well enough to attract the attention of the Nationals, who took him in the 14th round. He moved back into a full-time bullpen role in 2019 and pitched his way across three levels to Double-A before being sent to the Mariners in return for Hunter Strickland. Fletcher then went and was one of the most dominant relievers in the Arizona Fall League.
Fletcher uses a cross-fire delivery, hiding the ball well so hitters can’t pick it up, allowing his stuff to play up. And he’s got plenty of stuff. He was 94-95 mph in the AFL with good life and his above-average slider is a very effective weapon. It has really good action and especially in the Fall League, he threw quality strikes with it. The slider works especially against left-handed hitters, but Fletcher also has a decent changeup that works against righties, though he’ll have to continue to show conviction in throwing it.
After being pretty dominant in Double-A post-trade, Fletcher excited the Mariners even more with how good he was in the AFL. He’s not far from being ready to impact the big league bullpen, with him looking like he might be more than the lefty specialist some projected him to be.