 He has also co-operated with the scouting team of the Boston Celtics.Katsikaris began playing basketball in the youth system of Ionikos Nikaias, and was promoted to the senior men's team at the age of 15, setting a record (at the time) for being the youngest player ever in the Greek top division.After some years with Ionikos and Sporting, he made the big step up in his career to AEK Athens, in 1990.