[2] Kapetanos started his career in his native Greece, playing for Kozani, Iraklis and AEK Athens, with whom he competed in the UEFA Champions' League.

[4] Due to the fact that he previously had to undergo surgery to fix a meniscus tear, he was sidelined for his first months at CFR Cluj.

[6][7] On 14 July 2012, Kapetanos scored a late goal in extra time to help his team reach the Penalty shoot-out against Dinamo București in the 2012 Romanian Supercup.

[9] On 11 July 2014, after six years, Kapetanos returned to Greece by joining Skoda Xanthi on a two-year contract,[10] as a free agent.

Kapetanos as a reserved for the Greek Cup final, pulled one goal back for Skoda Xanthi in the 87th minute from close range.