I've wondered that, too. My guess is extended spring. I think a couple of reasons: 1) Innings 2) Culture 3) Coaching 1. He was 18 when he signed last summer, and there were arm concerns in the industry. I think they'll want to be very careful with his innings. If he starts out in cold Midwest League, that will be something new. And he'd probably exhaust his innings limit well before end of August anyway. 2. This is his first year in the U.S. So, I'm not sure he's gotten the full "Cubs Way" indoctrination, or a whole lot of coaching. Kane County is primarily a "playing" league, not an instructional league. Every night a game, with half of those on the road with time spent in the bus. Mesa has more coaches and is geared towards more instruction. New players at Mesa also get more "classroom" time on Cubs Way and various game situations. So I think a lot of that might be better served in Mesa. They also have English and American-culture training for internationals at Mesa. Not sure if the English is meaningful for a Chinese kid, though, if everybody else in the class is Latin. So maybe that's useless for him. But still, Mesa is controlled and protected, dorms, food, exercise, everything. Easier for a new guy than figuring out where to go and what to order (healthy) in Beloit or Peoria. At Boise, the players live with host families; at Kane they are on their own. I'd think he'd be better served for his first season to have a single host family who'd help him out. Perhaps they'd be able to find a Chinese-speaking host family to make it a lot easier for him. Or maybe not. Maybe they don't want to have any of those "safer/easier-for-him" situations, and they'd prefer he was going out with teammates, ordering at MacDonalds, and learning to live more on his own.