lowest era- by a player with at least 750 ip between 1962 to 1966
lowest era- by a player with at least 750 ip between 1994 to 1998
lowest era- by a player with at least 750 ip between 2013 to 2017
lowest era- by a player with at least 750 ip between 2012 to 2016
lowest era- by a player with at least 750 ip between 1999 to 2003
lowest era- by a player with at least 750 ip between 1997 to 2001
lowest era- by a player with at least 400 ip between 1969 to 1971
lowest era- by a player with at least 400 ip between 1971 to 1973
lowest era- by a player with at least 400 ip between 1964 to 1966
lowest era- by a player with at least 400 ip between 1968 to 1970
lowest era- by a player with at least 400 ip between 1990 to 1992
lowest era- by a player with at least 400 ip between 1993 to 1995
lowest era- by a player with at least 400 ip between 2013 to 2015
lowest era- by a player with at least 400 ip between 1999 to 2001
lowest era- by a player with at least 400 ip between 2000 to 2002
