One more from an A’s fan…

I know in the AL your biggest rivalry is with the Yankees, but who do you consider to be your biggest divisional rival? You would think Texas, but they’ve been irrelevant pretty much the whole time you’ve been in the division so that might not be the case. Recency bias would say Seattle, but a few beaned batters doesn’t make it historic enough. Is it Oakland? It has to be Oakland, right?