[1] He is a two-time Olympian (2000 and 2004), and a 2003 All-American swimmer in the 100 m freestyle, while studying in the United States.

He failed to reach the top 16 in the 100 m freestyle, finishing in a thirty-fourth place tie with Kyrgyzstan's Sergey Ashihmin at 51.28.

[4] He also placed fifteenth, along with Athanasios Oikonomou, Spyridon Gianniotis, and Dimitrios Manganas, in the 4 × 200 m freestyle relay (7:35.77).

[5] When his home nation Greece hosted the 2004 Summer Olympics in Athens, Bitsakis competed only as a relay swimmer in the men's 4 × 100 m freestyle.

[6][7] Teaming with Aristeidis Grigoriadis, Andreas Zisimos, and Alexandros Tsoltos in heat two, Bitsakis swam a third leg and recorded a split of 52.25, but the Greeks settled only for seventh place and fourteenth overall in a final time of 3:24.26.