In Guillon's final five starts he pitched 29 innings and surrendered just 11 hits. He walked 11 and struck out 24. Very encouraging, considering his start to the season.
The way he's throwing right now, he could help the big league club (out of the pen). Always a chance his control problems would resurface, but his stuff is plenty good.
Very, very encouraged by the way he turned his season around. And kudos to the Reds for not demoting him when things were going poorly.