Create a one-line data frame containing an entry to be appended to an in-progress data frame of all entries
generate_row_to_add(df_helper_2, e_rank_helper_2, k, e_helper)
a one row data frame containing an improved entry
a master data frame of athlete ranks by event
a data frame of candidate athlete entries to add to a given event
an integer denoting which element of e_rank_helper is under evaluation for addition. Should be 1, 2, 3 or 4 depending on the minimum number of entries
the event for which entries are being evaluated