One way to measure a well-rounded bench and at-the-ready relief is how well they can contribute over a prolonged period of time. The day of the role player has arrived for the Phillies, a team now featuring seven players who weren’t part of the world championship squad. Last season, a good bench meant little more than having one or two one-dimensional guys who could come off the bench and pop one, which they had in Matt Stairs and professional pinch...