The White Sox signed brothers Euclides and Robin Leyer out of El Seibo, Dominican Republic, when they were 19 and 18 years old, respectively. The younger Robin has developed into an intriguing armstrength prospect who reached Double-A Birmingham in the second half of 2015. Leyer began to unlock his potential in 2014, when he worked with low Class A Kannapolis pitching coach Jose Bautista. His upper-end velocity began to tick up from 94 mph to its present max of 97. His double-plus fastball features more life at lower velocities, and batters seem to pick up the ball early, which helps explain why he doesn't miss more bats. Leyer has good feel for an average changeup with split action and fade. He needs to stay on top of his below-average slider to improve its consistency, and right now the pitch lacks power and bite to generate swings and misses. Leyer's changeup and acceptable control keep him alive as a starter, but he might be more effective in a bullpen role where he can air out his fastball.
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