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Campana, 26, led the Cubs with 30 stolen bases last season, but he didn't get on base consistently enough to utilize his speed. He was designated for assignment on Feb. 10. In 89 games last season, Campana batted .264 with a .308 on-base percentage.
"It's difficult to lose Tony from the organization," Cubs general manager Jed Hoyer said. "Great person, he's a fantastic base stealer and a guy we really enjoyed getting to know. But ultimately you can only protect 40 guys on the roster, and he got caught up in the roster crunch. We have a little bit of depth in the outfield and less depth in pitching, and given that, it led us to designate Tony for assignment."
Leal could play in the U.S. this year, but Castillo will likely stay in the Dominican Republic and play in the Dominican Summer League. Leal was 6-2 with a 2.44 ERA in 14 appearances for the DSL last season, striking out 70 over 70 innings. Castillo was 2-4 with a 5.40 ERA in 14 appearances in the DSL.
Impossible to know much about these guys based on their numbers at that age, but the fact the Cubs got something younger than 24 or 25 is kind of impressive.
Castillo was Arizona's most expensive international amateur signing in 2011, when he signed for $250,000 from Oswaldo Camacho's program on Aug. 27, his 16th birthday. With his August birthday, he was one of the youngest signings in 2011 and pitched the entire Dominican Summer League season at age 16. Castillo is from Valencia but has also lived in Spain. He used to play soccer as well and his athleticism is evident in his smooth delivery, which he repeats well for his age. He has a long, loose arm stroke, a long stride and gets good extension out front. He signed throwing in the mid-80s with a lanky build, but he now touches the low-90s and has a good changeup for his age, although his breaking ball is still a work in progress. Castillo did post a 5.40 ERA last year, but if he were born a week later, he wouldn't have even been eligible to sign until July 2, 2012, so he's an intriguing arm for the Cubs to take a flier on.