Who are the other two and why do I care? First, I've been spending time keeping my database analysis skills strong by coming up with odd questions like this. I get this all from combining Sean Lahman baseball data with Kellogg's data. I've added two tables to the Lahman tables. The first table lists all players with a Kellogg's card. The second table lists every Kellogg's card.
The answer is not Ozzie Smith or others who hit a homer during the playoffs without hitting one during that regular season. This is more narrow. I'm looking for the two other players who hit more post-season homers than regular-season homers in their careers.