Removed any rows where pitch locations are missing
Regular season only
Removed innings where a batter batted twice (i.e. the team hit around). This happened about 1% of the time in 2014.
Did this because I couldn't figure out how else to link the batter's outcome to his on base status later in the inning. See lines 34-50 of code/clean-pitchfx-data/2-clean-pitchfx.R
Things I still need to update