Danny Graves saved a high percentage of the games when he was in a save situation. David Weathers, same thing. Eddie Guardado, he was effective even when his arm was getting ready to fall off. Matt Capps saved games. I imagine if we threw Logan Ondrusek out there in the 9th inning, he'd get through it most nights. Most franchises could throw out a list of average relievers who got the job done well enough as the "closer." The skill is being a major league reliever, not some magic mojo talent they possess, despite the myth that there is. The current manager/management make knee jerk reactions when they try someone new and give the job back to "someone who's done it before" or "closer by committee" until someone gets on a streak where they "possess the closer mentality." Its a self-fulfilling prophecy.
It was a lotta fun watching Chapman come in last year. If baseball games were won or lost on how much fun was had during the game, then Chapman's my man. Its fun when he saves it, its fun for the opponent when he blew it. But its holding a lead in the 9th inning, and most average major league relievers hold a lead for an inning when they come in. If they didn't, they'd have ERAs in the 9s. They don't.