wku_stats contains the raw player data taken from the 2013 WKU
softball team's webpage. wku_probs contains the
player probabilities calculated using prob_calc. Together, they provide
an example of calculating probabilities from player statistics. See
?prob_calc for more details on the columns of the two data frames.
wku_probs is designed for use with chain and sim. It
additionally contains a fast column that indicates whether each player is
considered fast. This column is not necessary for running chain
and sim, since it is equivalent to the default assignments.