They've turned many scrapheap relievers into quality bullpen arms. One of these three could be their next development project.
Many of the key pieces in the Pittsburgh Pirates' bullpen were not star players when the Bucs acquired them. Both Justin Lawrence and Dennis Santana were waiver claims, and now figure to be the Pirates' eighth and ninth inning duo. Isaac Mattson was signed out of independent ball. Dauri Moreta had an ERA over 5.