Friday on the Farm: Aaron Zavala is playing ball in Texas Rangers system, even with ‘medical anomaly’

(Down East Wood Ducks/Matthew Edwards)
When the Texas Rangers announced that they had signed second-round pick Aaron Zavala, they created a cloud of suspicion.
The deal wasn’t agreed to until the final minutes before the signing deadline because the Rangers medical staff had discovered a “medical anomaly.” The team left it at that, adding that it was a personal matter Zavala would have to disclose.
The Rangers drafted R.A. Dickey in the first round of the 1996 draft, only to discover that the right-hander didn’t have an unlar collateral ligament. At least he would never have to undergo Tommy John surgery.
General manager Chris Young didn’t disclose a baseball injury like Dickey’s, so that allowed a mind wander.
Does Zavala have a disease? Is the anomaly related to his heart?