Saturday, February 24, 2007

Baseball as a function of day of week

I was bored this evening & decided to play around w/ 2006 MLB data from Retrosheet. One can download boxscore information for every game played last year (& other years). I decided to look at how baseball games differed by day of the week.

For instance, did you know that last year the best days for visitors to beat the home team was on Tuesdays and Wednesdays. The hardest day for visitors to win was Fridays. See plot.
My theory would be that weeknight home games are less attended & maybe there's a little less excitement & maybe a letdown for the home team. Fridays are often the first game of a homestand & maybe the good feelings about returning home are enough to lead the home team to more than a half a run winning margin (on average). The attendance part of this is true. See plot.

Fascinating, fascinating stuff. Some additional factoids. Monday games are the shortest and are on average 6 minutes shorter than Saturday games which are the longest. Sunday games have the most runs scored and most HRs. The lowest scoring games are on Fridays (maybe because they're almost always night games). Monday is the day w/ the fewest SB attempts. Errors are pretty consistent from day to day.


3 comments:

Anonymous said...

Dolberry, I find your stats facinating!

Anonymous said...

Hey, Pat! Are you "anonymous"? I do think these stats are interesting. Just curious- did you compile the info or was it already compiled?
Kris

Dolberry! said...

Dolberry knows how to spell fascinating, so that was someone else.

The raw info about all games ever played is available in spreadsheet format at retrosheet.com. Very cool.