Arie Haan
He played together with Johan Cruyff, Johan Neeskens, Ruud Krol, and Arie Haan. His coaches at Ajax were Stefan Kovács and Rinus Michels, who designed the famous Dutch offside trap around him and Velibor Vasović. Blankenburg was Ajax's team sweeper and was widely considered to be one of the best in Europe. In the five seasons at Ajax he won the European Cup three years in a row between 1971 and 1973 and the Intercontinental Cup in 1972. He became Dutch champion in 1972 and 1973 and won the Dutch Cup in 1971 and 1972.