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Arellano garners interest as a 6-foot-2 lefty who sits 87-88 mph and touches 91 with his fastball. He also has a potentially above-average curveball. Arellano is just an average athlete on the mound and that leads to spotty command as well as a checkered injury history. He missed time in recent years with lower back issues and shoulder inflammation among other maladies. When right Arellano shows promise with an elusive fastball with tilt and a promising curveball from the left side, but has yet to prove he can stay healthy or consistent. Arellano is a good student who wants to be an engineer and would be the first from his family to go to college, so there is strong belief he will honor his commitment to UC Santa Barbara.