New Reds owner Robert Castellini surprisingly fired Dan O'Brien today. In Castellini's news conference on Friday, he seemed prepared to work with O'Brien:

Major-league owners approved the Reds' sale to Castellini last Thursday. In a news conference a day later, he indicated he was impatient with losing and was planning to make changes as he learned more about how the team operates.

Castellini's first move was to put chief operating officer John Allen in charge of the business side of the franchise, with O'Brien reporting directly to him. Under previous owner Carl Lindner, O'Brien reported to Allen.

Whatever he learned about Dan O'Brien in two days, Castellini obviously didn't like it. I wonder if he'll hire DePodesta?