Inconsistencies in number of columns of doubles files

[TomKemperNL]

I was having some weird issues trying to import the data, which in the end turned out to be due to some inconsistent nr of columns within files.

So I've ran a little python script over the all the csv-files in this repository and noticed the following:

atp_matches_amateur.csv
        There are 1 lines with 49 columns
        There are 25001 lines with 40 columns
atp_matches_doubles_2000.csv
        There are 1 lines with 65 columns
        There are 1429 lines with 66 columns
atp_matches_doubles_2001.csv
        There are 1 lines with 65 columns
        There are 1393 lines with 66 columns
atp_matches_doubles_2002.csv
        There are 1 lines with 65 columns
        There are 1332 lines with 66 columns
atp_matches_doubles_2003.csv
        There are 1 lines with 65 columns
        There are 1260 lines with 66 columns
atp_matches_doubles_2004.csv
        There are 1 lines with 65 columns
        There are 1298 lines with 66 columns
atp_matches_doubles_2005.csv
        There are 1 lines with 65 columns
        There are 1260 lines with 66 columns
atp_matches_doubles_2006.csv
        There are 1 lines with 65 columns
        There are 1269 lines with 66 columns
atp_matches_doubles_2007.csv
        There are 1 lines with 65 columns
        There are 1284 lines with 66 columns
atp_matches_doubles_2008.csv
        There are 1 lines with 65 columns
        There are 1280 lines with 66 columns
atp_matches_doubles_2009.csv
        There are 1 lines with 65 columns
        There are 1281 lines with 66 columns
atp_matches_doubles_2010.csv
        There are 1 lines with 65 columns
        There are 1295 lines with 85 columns
atp_matches_doubles_2011.csv
        There are 1 lines with 65 columns
        There are 1281 lines with 85 columns
atp_matches_doubles_2012.csv
        There are 1 lines with 65 columns
        There are 1300 lines with 85 columns
atp_matches_doubles_2013.csv
        There are 1 lines with 65 columns
        There are 1260 lines with 85 columns
atp_matches_doubles_2014.csv
        There are 1 lines with 65 columns
        There are 1275 lines with 85 columns
atp_matches_doubles_2015.csv
        There are 1 lines with 65 columns
        There are 1317 lines with 85 columns
atp_matches_doubles_2016.csv
        There are 1 lines with 65 columns
        There are 1354 lines with 85 columns
atp_matches_doubles_2017.csv
        There are 1 lines with 65 columns
        There are 1313 lines with 85 columns
atp_matches_doubles_2018.csv
        There are 1 lines with 65 columns
        There are 1285 lines with 85 columns
atp_matches_doubles_2019.csv
        There are 1 lines with 65 columns
        There are 1236 lines with 85 columns
        There are 127 lines with 66 columns
atp_matches_doubles_2020.csv
        There are 1 lines with 65 columns
        There are 270 lines with 85 columns

Apparently for all the doubles-files the data is a bit too long (or the header-row is one column short)