来源：http://tinyurl.com/n5n2g3k
就是权威网站baseball prospectus的
Mark Anderson写的：
RHP Jen-Ho Tseng (Cubs): Tseng surprised over the weekend with an extremely impressive three-inning stint against the International Prospect League squad in Mesa.
Tseng came out pumping 91-92 mph fastballs with precision, touching 94 in his first inning of work. He moved the ball from side to side with ease, elevated when he wanted to, and generally worked the knees against overmatched young hitters. His changeup was firm on the couple of occasions he mixed it in, thrown in the 81-83 mph range, all the while showing late sink reminiscent of a quality splitter. The arm speed and slot are identical to the fastball and you can see at least a plus future for the
pitch. Tseng's curveball stole the show as the outing extended, transforming from a loopier breaking ball that was easily spotted out of the hand to a tight hammer breaker that looked the part of yet another future plus secondary pitch.
Tseng has a broad-shouldered six-foot-one frame that should wear more strength as he matures, giving him the basic ingredients of a durable innings eater. With a very deliberate drop-and-drive delivery, Tseng seemingly lulls you to sleep with a slow lower half before exploding his upper body toward the plate and showing off a clean, ultra quick arm. Despite the drop-and-drive delivery, Tseng had good plane to the plate, making him even more difficult to square. Just 19, Tseng is extremely polished for
his age and should handle a full-season assignment this year. –Mark Anderson
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