 Under his guidance the CU men's soccer program were crowned CCC Champions in 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010, 2011 and 2012 qualifying the CU team for the NAIA national tournament 7 times in program history.Birkey was instrumental in the 7.5 million dollar on-campus soccer stadium which opened in 2011 and worked closely with CU administrators and NIKE soccer to name the soccer field "Tuominen Yard" in respect to former CU soccer All-American (1994) and NIKE soccer marketing agent Jarkko Tuominen who died unexpectedly in September 2005.NIKE soccer maintained a strong relationship with the program and provided sponsorship until the galling closure of the program in 2020.