Drafted in the 8th round (245th overall) by the Seattle Mariners in 2015 (signed for $300,000).
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Mobley is an athletic high school righthander with a loose arm and plenty of projection. His fastball gets to 91-94 mph regularly and he flashes a potentially plus curveball.
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Mobley, who didn't make his varsity high school team until his junior season, committed to his hometown Evansville program but generated attention throughout the spring of his senior high school season as his velocity increased. He peaked at 94 mph with his fastball, and area scout Jay Catalano saw him in three double-digit strikeout games. The Mariners signed him for an above-slot $300,000 bonus out of the 2015 draft, and he already has the best curveball in the system. He continues to grow into a lanky frame but has pushed his fastball, which sits around 90 mph, up to 93-94 at times. He could gain velocity and improved fastball command as he continues to use his lower half more in his mechanics and drive to the plate rather than drifting in his delivery. Mobley has a good feel for locating his above-average curveball, which has true 12-to-6 shape and gives him an out pitch. His changeup is nothing special, but he hasn't needed it much thanks to the two-pitch mix he succeeded with in high school. He's athletic enough to make adjustments and has shown aptitude to project him as a back-end starter. Mobley may be ready to jump to full-season ball in 2016, with short-season Everett a likely fallback.
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