|Born||4 December 1962|
|Height||1.88 m (6 ft 2 in)|
|Highest ranking||No. 745 (March 18, 1985)|
|Highest ranking||No. 854 (January 3, 1983)|
The left-handed Efraimoglou represented Greece in the Davis Cup from 1984–1996, posting a 10–10 record in singles and a 12–11 record in doubles in twenty-six ties played.
Efraimoglou's highest ranking in singles was world No. 745, which he reached on March 18, 1985. His highest doubles ranking was world No. 854, which he reached on January 3, 1983.