Amerikanos began his senor men's
club career in 1959, when he joined the Greek club
AEK Athens. He would eventually become one of the best players in the history of the club. With AEK, he won 6
Greek League championships, in the years 1963, 1964, 1965, 1966, 1968, and 1970. While a member of AEK, he was the
Greek League Top Scorer twice, in the years 1965 and 1968. Amerikanos also led AEK Athens to the
1966 Final Four of the
FIBA European Champions Cup, which is now known as the
EuroLeague. That 1966 Final Four was the first time that the EuroLeague ever used a
final four system. Amerikanos had also thus led a Greek team to a final four in the EuroLeague, for the first time ever. Amerikanos also led AEK Athens to the championship of the
2nd-tier level
FIBA European Cup Winners' Cup of the
1967–68 season. That was the first European championship that was won by any Greek team, in any sport. Along with
Slavia VŠ Prague's legendary player
Jiří Zídek, Amerikanos was the
top scorer of the finals, with a total of 31 points scored. That finals game was played at the
Panathenaic Stadium, in
Athens, where a total of 120,000 people were in attendance for the game. 80,000 fans were watching the game from inside the stadium, while another 40,000 fans watched and listened to the game right outside of the stadium's outer walls. Amerikanos was also the
Greek League Top Scorer twice during his career, in 1965 and 1968. In 1975, Amerikanos moved to the Greek club
Apollon Patras. With Apollon, he won the
Greek 2nd Division championship in 1976. Amerikanos retired from playing professional club basketball in 1977. ==National team career==