[1][2][3] Alongside his brothers Christos Dimopoulos and Spyros he holds the world record for the highest number of siblings scoring on the same day, on 2 February 1992 in the Greek first division.
[6] His performances impressed the league's champions Aias Gastouni who signed Dimopoulos for 1 million drachmas, a record for the division at the time.
During his first season in the fourth division scored 25 goals helping his team finish 5th in the third group.Despite PAOK's interest where his brother Christos was playing, Panathinaikos signed him in the summer of 1982.
He impressed coach Ștefan Kovács in his first season with the Greens scoring 17 goals, most of them after coming off the bench.
Panathinikos' squad had then many experienced players such as Mike Galakos, Kostas Mavridis, Juan Ramón Rocha, Giannis Kyrastas, and Tschen La Ling, even reaching the European Cup's semifinals in 1984-85 losing out to champions Liverpool.Five years later he signed mid-season for Iraklis in a sqiad with players like Vasilis Hatzipanagis and Savvas Kofidis and helping his team qualify for the 1990-91 UEFA Cup.