Correct, and many of the best relievers in baseball were starters for a significant portion of their career. For some context, Milwaukee's bullpen had the ninth best ERA in baseball last year, by all accounts a pretty good unit. Here is the list of guys who pitched at least 10 relief innings for the Brewers last year: Francisco Rodriguez: Starter through advanced-A ball Will Smith: Starter into MLB Jeremy Jeffress: Starter into AAA Corey Knebel: Reliever in college when drafted Neil Cotts: Starter into AAA Michael Blazek: Starter into AAA Jonathan Broxton: Starter into AA David Goforth: Starter into AA Tyler Thornburg: Starter into MLB Cesar Jimenez: Starter into MLB Tyler Cravy: Starter into MLB So except for Knebel who was already a reliever for the Longhorns when he was drafted by Detroit, literally everyone of consequence in the Brewers' bullpen had significant starting experience. Most of them into the high minors and the big leagues. Heck, K-Rod had 42 starts in the minor leagues before turning 20. And among guys likely to be in the bullpen at some point next year, Junior Guerra, Ariel Pena, Justin Barnes, Damien Magnifico, and Mike Strong all have quite a bit of starting experience as well. It's backwards logic to say, well he may or may not make it as a starter, so the heck with it, let's make him a reliever in A ball. The list of successful big league relievers who were converted from a starter into a reliever as a pro, before they hit advanced-A, is a very short one. Even if you don't think the guy is going to end up as a starter, like Barnes and Magnifico almost assuredly were not, it is still worthwhile to give them lots of innings to work on what they have, and maybe once in awhile one of the guys you had pegged as a reliever actually does work out as a starter, and you've created a bunch of value for yourself. And if they do turn out to be a reliever, you usually do it after a few years in AA or AAA. Sometimes longer.