The San Diego Padres are expected once again to get busy at this year's trade deadline. With the team in the thick of a heated NL Wild Card race, they will need to make improvements before July 31st to prepare for the stretch run.
However, AJ Preller and the rest of the organization need to be careful they do not end up trading away a future star. Here are four under-the-radar Padres' prospects who should be untouchable at the deadline.
1. Francis Pena, RHP, Padres No. 18 Prospect
Pena has all the tools to be a talented reliever someday for the Padres.