I could see Nathan going to Detroit. As for Robertson, they've never really given him a good crack at it. I believe the article said he's converted 8 out of 18 save opportunities. Not great numbers but still a small sample size. Honestly, I'd worry about other areas such as the starting rotation and the left side of the infield (third base and shortstop). I'd save the money and stick Robertson in the 9th for now.