Bobby Bell was promoted to AA to start the season and he has had a mix of starts, some good, some not so good. Bell was drafted in the 18th round of the 2008 draft. Initially Bell was used as a reliever, he had one of the best change-ups in the system and his control was excellent, he didn't walk a batter in that first season.
Belll was converted to a starter mid-way through 2009. He is working on a curveball which he needs as a third pitch to be effective as a starter.
Here is a shot of Bell pitching in Dunedin this spring.
And another one of Bell pitching.
Finally, here is a link to video of Bell warming up before an inning in Dunedin. Note the slingshot action.
https://www.battersbox.ca/article.php?story=20100516104536113