Yonder seems to have finally overcome the 2009 injury to his wrist, and had an excellent season in triple-A, and then made his major league debut. He hit 267/388/406 in 101 at-bats double-A, but improved to 296/355/470 in 406 at-bats in Louisville. He then went 6-29 in Cincinnati.
Yonder is blocked at first base in Cincinnati by Joey Votto, who just had an MVP-worthy year in the majors. I would imagine Yonder will return to triple-A in 2011, perhaps to help him improve his hitting against lefties. He hit 307/370/488 against righties, and 269/318/429 against southpaws in Louisville.
This is what BA has to say about him:
Alonso started slowly at Louisville after arriving in mid-May, but he adjusted and batted .332 with nine of his 12 homers in the final two months. He displayed good power to all fields with a short stroke, good hand-eye coordination and excellent strength. After struggling against lefthanders in the lower minors, he batted .269/.318/.429 against them in the IL.
"When he swings the bat, he puts the ball in play more than most players, so he needs to be careful when he swings the bat to get a good pitch to hit," Sweet said. "On tough pitches, most guys would foul the pitch off or swing and miss. Yonder puts it in play."
An average defender at first base, Alonso is blocked there by Joey Votto in Cincinnati. He played 17 games in left field for Louisville, but his lack of speed severely limits his range. He's not athletic enough to give third base a try.