Ivkov made his Bulgaria debut in 1968, earning 44 caps and scoring one goal over an eleven-year international career.[2] He was part of the squad for the 1968 Summer Olympics, where Bulgaria won the silver medal. Ivkov captained his country 10 times and played in the 1974 FIFA World Cup.[3]
Club career
Born in Pernik, Ivkov began his career at local club Metalurg. In 1966, he left to join top league side Minyor Pernik. After one season at Minyor, Ivkov joined Levski Sofia where he won four Bulgarian League titles and four Bulgarian Cups. He spent eleven years at Levski, scoring 15 goals in 375 appearances in all competitions.