Yeah and more importantly, the value gain from taking that risk just isn't there. I used to be all over that. I thought the Reds were dumb for not starting Chapman. I thought the Jays were really dumb when they moved two of their top starting prospects to the MLB bullpen (Osuna and Castro). Even last off-season, I wanted Storen to take over the closer's job and Osuna to be stretched but I'm pretty much done with that line of thinking. It's all based on the premise that relievers have less value than starters and of course strictly speaking that's true by your standard value metrics but that might be a bit misleading. One of the fundamental characteristics of WAR is that it is context neutral and by being context neutral, it has revolutionized the way baseball players are considered. For ages, context dependent stats like runs, RBIs and pitcher wins were overvalued. WAR has brought balance by acknowledging that the opportunities to pad those context dependent stats are not evenly distributed. That's all fine and sensible but when it comes to relievers, there's an argument to be made that you SHOULDN'T look at context neutral stats because the context in which a reliever operates is deliberately manipulated. Top relievers may not throw as many innings as starters but their inning are distributed in a way that maximizes their impact because they nearly always pitch in high leverage situations. That's how Roberto Osuana had a higher wpa (win probability added) than every Toronto starting pitcher not named Sanchez. By that measure, Osuna is hardly being wasted in the bullpen. In fact, you could argue the opposite that he's having more impact than he would if he were say a number 3 starter or something like that. People might not agree on the degree of risk involved in turning Osuna into a starter. We'll never know for sure unless it's actually tried but I think nearly everyone would acknowledge that there's at least SOME risk to it if for no other reason than his injury history. By turning Osuna into a high leverage reliever, the Jays have insulated themselves from that risk without truly limiting his impact on the game. The more I think about it, the more I believe that the way the Jays are using him now is optimal.