Juan Duran spent the entire 2010 season playing with the Billings Mustangs despite really struggling in the GCL during the 2009 season. The promotion came as a bit of a surprise because of those struggles, but he showed solid improvements throughout the season, but also showed some of his warts at the plate that he needs to continue to work on.
In June, there was only about a week and a half worth of games to be played as the league doesn’t start until later in the month and Duran really struggled for that first stretch of the season as he would only hit .108/.195/.216 during June with 4 walks and 15 strikeouts. The walk rate was solid, but the strikeout rate was much higher than you would like to see over the time frame.
July was the best month for the outfielder as he went on to hit .294/.362/.435 with 9 walks and 27 strikeouts. His walk rate was once again solid, and once again the strikeout rate was higher than you would like to see. With all of that said, the overall line for the month was good as he showed a little bit of skill in each of the ‘slash’ stats.
August was a little bit of a step backwards as he hit .263/.309/.447 on the month with 5 walks and 26 strikeouts. The power output was good, but the lowered walk rate and high strikeout rate wasn’t as good as it was the previous month. In September he only stepped to the plate four times and he walked once while striking out the other three times.
Overall there were signs of improvement for Duran as his walk rate jumped up quite a bit from 2009 and his overall plate discipline improved as well despite jumping up a level against players that were mostly a few years older than he was. He also showed off impressive power (which you can see more in depth below in the spray chart) and his tools remained good. At the same time he showed that he was still quite raw and could take a while to fully develop his tools into skills due to the size of his strikezone.
Here is the spray chart for the season
| To | Total | % | Single | Double | Triple | HR | AVG | SLG | IsoP |
| P | 8 | 6% | 0 | 0 | 0 | 0 | .000 | .000 | .000 |
| C | 3 | 2% | 0 | 0 | 0 | 0 | .000 | .000 | .000 |
| 1B | 31 | 24% | 0 | 0 | 0 | 0 | .000 | .000 | .000 |
| 2B | 10 | 8% | 2 | 0 | 0 | 0 | .200 | .200 | .000 |
| 3B | 9 | 7% | 3 | 0 | 0 | 0 | .333 | .333 | .000 |
| SS | 14 | 11% | 2 | 0 | 0 | 0 | .143 | .143 | .000 |
| LF | 14 | 11% | 8 | 4 | 0 | 1 | .929 | 1.429 | .500 |
| CF | 30 | 23% | 12 | 5 | 1 | 4 | .733 | 1.367 | .633 |
| RF | 11 | 8% | 5 | 1 | 0 | 1 | .636 | 1.000 | .364 |