The former first round pick came into the 2010 season still recovering from a broken hamate bone that occurred in late June of 2009. The injury typically takes a full year to recover, though guys can play after 6-8 weeks from the original injury.
Surprisingly, Alonso began his season in Carolina after ending his 2009 season with Louisville in the playoffs. While playing for the Mudcats, he hit .267/.388/.406 over the first 5 weeks of the season with 19 walks and 16 strikeouts. Clearly the power had not shown up over the first 5 weeks.
Coming up to Louisville didn’t do much for Alonso as for the rest of May he would go on to hit just .256/.310/.359 over 19 games. He would draw 5 walks and strikeout 11 times, but the power was still missing from his game.
When June rolled around, there were more struggles for Alonso who was obviously slumping and pressing. The first baseman hit just .226/.256/.322 on the month, with a very uncharacteristic 5 walks and 24 strikeouts on the month.
As July rolled around though, things took a drastic turn for the better as the one year mark of the hamate injury went by. During the month of July, Alonso hit .366/.423/.663 on the month with 10 doubles, a triple and 6 home runs to go along with 10 walks and 18 strikeouts. During the month, Alonso was also sent to the MLB Futures Game, where he stood out among players in terms of his power during batting practice.
August was more of the same for Alonso as he continued to tear apart the International League. He hit .330/.419/.527 on the month with 11 doubles, a triple and 3 home runs with 17 walks and 23 strikeouts.
The last two months of the season helped Alonso bring his seasonal line to .290/.362/.458 with the most interesting stat in my opinion from the system this season, 13 steals.
Alonso was called up to the Reds on September first and was essentially a pinch hitter for the month and he struggled in the role, hitting just .207 with no walks and just 2 doubles in 29 at bats spread out over 22 games.
Here is Alonso’s spray chart for the minor leagues only: