 He was one of Essendon's consistent players in the years 1999, 2000, 2001 and 2002.Blumfield was a member of the Essendon 2000 premiership team, which defeated Melbourne in the 2000 AFL Grand Final and won a record 24 out of 25 games for the season.At the end of 2002 he was traded to the Richmond Tigers to help Essendon meet the total player payments limit.