In what world has Rizzo been proven right? There was no way to be proven right because by choosing one course of action you can't ever know what would have happened with the other course. He could have pitched the Nationals to the world series and been fine this season or he could have blown out his elbow the next start. We will never know.
Rizzo made a decision in early in the year, when Was wasnt expected to contend and refused to revisit it with the new facts of being a world series contender in Sept. Some people think that's smart, some dont but he will never be proven right.