The Mariners have one of the weakest farm systems in the big leagues, but Moore has been a bright spot in a system to-date. The M’s second-rounder from the 2015 June draft made his Triple-A debut Tuesday evening, and he showed the makings of a future number four or number five starter.

Moore has a high-3/4’s arm slot that gives him some slight downward angle despite standing just 6-feet tall. He keeps his front side high prior to releasing the ball, which adds some deception. Moore likes to work quickly and will quick-pitch occasionally to keep hitters off balance.

During this viewing, Moore’s fastball sat 91-to-93 mph with some arm-side bore to the inner half of the plate. Moore attacks the strike zone early and often with the fastball, and showed the ability to command it as well (2.56 career BB/9). He also displayed a two-seam version sitting 90-to-91 mph that had some arm-side run.

Moore also displayed a curveball 75-to-76 mph that he threw for strikes early in the count and used for put away. The pitch had 12-to-6 shape, but it lacked meaningful depth when he used it for put away in this look. His curveball is currently fringe-average, but it has the potential to be average because it comes in on the same plane as his fastball. The changeup was Moore’s best secondary pitch during this outing. It had good velocity separation from the fastball at 80-to-82 mph, with a good arm action and some arm-side fade and sink, but it did flatten out up in the zone on occasion. He has good control of the changeup, but doesn’t command it consistently.

Moore still needs to improve the command of his secondary pitches, however that shouldn’t be a problem given his plus makeup and pitchability. With that said, his call to The Show might come sooner than expected because of the injuries that are currently plaguing the M’s starting rotation.