Prince is a Test match player. Kallis can keep his wicket, Kallis is a much better batsmen. One day teams is about shot makers, yes there is a place for the likes of Prince but SA don't particularly need him. If his one day form was good yes include him but it isn't.
I don't think its a huge mistake including him but if Kallis gets an injury Prince has shown no signs he will take over the role.

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