Relief pitching is a fickle thing, especially for a Cincinnati Reds team that can't protect a lead. But Tony Santillan was supposed to be a strength for the Reds, and he has been anything but. In 17 innings this season, Tony Santillan has a 5.82 ERA and a 1.53 WHIP. Simply put, that is unacceptable. What makes this worse is that Santillan got out of April with a 1.82 ERA; in May, Santillan is sporting an ERA of 21.60 in five appearances. Obviously, this isn't just a Santillan problem; May has been a nightmare for the entire team. But as the Reds look for players they can rely on, Santillan has not provided answers. "You go through periods where you make mistakes, and you pay." Reds Manager Terry Francona said to the media on Wednesday night when asked about Santillan. "We gotta get him going because he's so important to what we do, can't run from it, we need to get him going." When you dive deeper into the numbers for Santillan, they get worse.…