[1] He graduated as basketball coach from the Faculty of Sport and Physical Education at the University of Belgrade in 1984.
He coached the Crvena zvezda youth system for a decade and won several junior national championships.
In 1993, Sedlaček moved to Sweden due to the sanctions against Yugoslavia where he coached Alvik for two seasons.
[2] Sedlaček was a director of Basketball Without Borders camps for Europe (2001–2013) and the Americas (2005–2007), assistant coach of the World Select Team at the Nike Hoop Summit (1998–2018), and director of Nike Euro Camp (1997–1999).
[3] When in Belgrade, Sedlaček frequently appears as a pundit for basketball broadcasts at the Radio Television of Serbia.