Why? Why should Castillo cost substantially more than a Cy Young winner? What exactly did the Rays get?
Patino is the closest thing the Rays' return has to a "centerpiece." He spent most of the season in the majors, working an ineffectual 11 appearances. Patino is a quality athlete who averaged 97 mph on his heater and who generated nearly 50 percent whiffs with his slider during his big-league outings. He's on the smaller side, however, and he needs to continue to develop his changeup and his command if he wants to remain in a starting role long-term. The Rays have a history of suppressing their best players' service time; in Patino's case, it seems reasonable to think he could stand for more seasoning: coming into 2020, he'd appeared in just two games above the A-ball level.
Mejia is the closest thing the Rays' return has to a "veteran." He's accrued more than two years of service to date, putting him a season away from reaching arbitration. There have long been concerns that Mejia is too small to handle a full workload behind the dish (he's listed at 5-foot-8, 188 pounds); it doesn't help his case that he graded as a below-average framer prior to an uptick in 2020 that could be a small-sample mirage. The Rays could have him try his hand at another position -- perhaps DH if they find a taker for Yoshi Tsutsugo -- as a means of freeing up his bat. The downside is that Mejia hasn't hit much as a big-league player: his career line is .225/.282/.386 (78 OPS+) through his first 362 plate appearances. He has been better against righties, at least.
Wilcox, San Diego's third-round pick this year, hasn't yet made his professional debut. The Padres pried him away from returning to the University of Georgia by handing him a signing bonus exceeding $3 million. Wilcox has a starter's frame and a good slider, but some evaluators feel he's likely to end up in the bullpen -- where, to be fair, he could sink and slide his way into a high-leverage role.
Then there's Hunt, the Padres' second-round pick in 2017, who is the inverse of Mejia in the sense that he's larger than the standard backstop (6-foot-3, 215 pounds). Hunt had been a better-than-average hitter in each of the past two seasons, and that was before he altered his swing this year. Depending on if that change will allow him to tap into more raw power once the minors resume, he could be one worth watching.
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