Gaudin is out, and the roster is set. I hope Guzman and Patton can earn their keep, and continue to succeed at the major league level throughout the year.
I suspect the final decision came down to an issue of philosophy. I've said it before and I'll say it again--Cubs' brass love Ks. Gaudin was not a strikeout guy (frankly, I don't really know how he made a living as a pitcher at all).
Guzman, Vizcaino and Patton all have the ability to get strikeouts. That's what kept them on this team. Let's hope they can do so this year.