The Jose Martinez experience at first base offered a rather recent reminder that it's not quite as easy as sticking an outfielder there and hoping for the best.
What suggests that Ozuna would be a capable first baseman?
We have seen flashes of his gold glove defense at times this season.
The arm strength tends to come and go. At least he is finally being candid about what he is experiencing. Rick Hummel's recent interview with Ozuna about the arm shed more light on it than we have had all season. It's no coincidence that the issue is being talked about more freely now that the season is nearing its end. This is often when ailments that are brushed away or dismissed for much of the season become subtly or not so subtly acknowledged as factors in how a guy has played, or not played.
The Cardinals are in a delicate place with this. If Ozuna's arm is capable of being worked, he needs to work it. Needs to build strength and accuracy and the only way to do that is by practice. If the arm can't handle that, then a pursuit of a correction, whether surgical or rest-related, has to come first. If that's the case, then you're likely going to get an up-and-down arm in right field -- unless the Cardinals are eliminated and they decide to shut Ozuna down early.