This post originally appeared on The Captain’s Blog and is a followup to one published at both the Yankeeist and Fangraphs’ Community Forum.

Over at the Yankeeist, Larry Koestler took a look at one of 2010’s most curious mysteries: Alex Rodriguez’ shockingly poor performance against left handed pitchers. Using pitchFX data, Koestler concludes that the pitch selection of opposing southpaws (i.e., fewer four seamers and more cutters, two seamers and sinkers) contributed to Arod’s struggles (while also conceding the limited sample size), but could the answer be much more benign?

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Over the last couple of weeks there has been a lot of debate about the value of home field advantage in baseball. The discussion was crystallized most recently when the Yankees rested key bullpen members in their first place showdown against the Rays, but it has really be going on since the advent of the Wild Card.

Yesterday, we wondered about the value of finishing first from an accomplishment perspective, but ultimately, that is a very intangible way of looking at the question. At SI.com, Joe Seehan looked at home field advantage from a competitive standpoint and came to the conclusion that it really wasn’t an advantage at all. According to Sheehan’s research, the number one seed has advanced to the World Series in only eight of 24 chances since 1998, when the current playoff format was established. What’s more, over that span, the home team has only gone 45-39 in all post season series, according to Sheehan. In other words, there really isn’t a home field advantage in baseball during the postseason.

There is at least one more vantage point from which to consider this question, and it could very well be the most important: economics.

In the post season, gate revenue (i.e., attendance) is divided between the players and hosting team using the following format:

• Players: 60% of gate receipts from first three games of LDS and first four games of LCS and World Series; no contribution from other games.
• Home team: 40%* of gate receipts from first three games of LDS and first four games of LCS and World Series; 100% of gate receipts from all other games.

*A small percentage (approximately 1.5%) of LDS gate receipts goes to the umpires, while 15% of LCS and World Series gate receipts go to MLB.

On the face of it, there seems to be an economic advantage to having home field. But, is it real, and if so, how significant is it?

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