From ESPN.com. (Matthew's Note: Please include links when you copy and paste from other sources)

Triunfel opened a lot of eyes in the Arizona Fall League as the circuit's youngest player, showing tremendous natural aptitude for hitting and more than adequate fielding at second base. Triunfel sets up with his hands high, and they're so quick that he closes to the ball in no time, hitting line drives to all fields but rarely trying to pull the ball out, even though he probably could at the cost of some contact. Triunfel's performance this year was more impressive than it looks at first glance. For one thing, he started the year 3-for-39, then hit .307/.355/.433 the rest of the way, a period that included a suspension for violating team rules and a 3-for-46 stretch in June. For another, he was 18 in high-A, a level generally populated by players in their early 20s, and not only did he perform well, but he rarely struck out, a good sign that he was rarely (if ever) overmatched. He's an above-average runner and a good base stealer. He's a natural shortstop but played second in the Fall League, showing good hands and a good transfer on the double play.

There are some concerns on Triunfel. The suspension is one, his age is another. His listed date of birth is Feb. 27, 1990, which would mean he'll play all of 2009 at age 19, but as a Dominican prospect who's already put together physically, some have questioned his age. If he's really about to turn 21, he's still a good prospect, but not a potential star. There's no firm evidence to back up the questions, though, so for now, we'll assume he's going to turn 19 and is still on track for stardom.

The age concern is interesting.... I hope he's still 18.