ECAC Regular Season Best Defense

    1970 Cornell 1980 BC 1990 2000 RPI 2010 Cornell
    1971 Clarkson 1981 Clarkson 1991 Cornell 2001 Cornell  2011 Union
1962 Harvard 1972 BU 1982 Clarkson 1992 Harvard 2002 Cornell 2012 Union
1963 1973 BU 1983 Harvard 1993 Harvard 2003 Cornell 2013
1964 1974 1984 RPI 1994 Harvard 2004 Cornell 2014 Union
1965 BC 1975 Harvard 1985 RPI  1995 Vermont 2005 Cornell 2015
1966 Cornell 1976 BU 1986 Harvard 1996 Vermont 2006 Dartmouth 2016 Yale
1967 Cornell 1977 Clarkson 1987 Harvard 1997 Clarkson 2007 Clarkson 2017 St. Lawrence
1968 Cornell 1978 1988 Harvard 1998 Yale 2008 Harvard 2018 Cornell
1969 Cornell 1979 BU 1989 Harvard 1999 St. Lawrence 2009