Comparative dates on which the Nationals notched their ninth win, each season:
2014 - 16th April (15th match of season)
2012 - 17th April (12th match)
2013 - 17th April (15th match)
2005 - 20th April (15th match)
2011 - 20th April (16th match)
2010 - 23rd April (17th match)
2008 - 27th April (26th match)
2007 - 30th April (26th match)
2006 - 2nd May (27th match)
2009 - 7th May (27th match)