Gravalos competed for the men's 4×400 m relay at the 2008 Summer Olympics in Beijing, along with his teammates Stylianos Dimotsios, Konstadinos Anastasiou, and Pantelis Melachroinoudis.
Anastasiou competed for the men's 4×400 m relay at the 2008 Summer Olympics in Beijing, along with his teammates Stylianos Dimotsios, Dimitrios Gravalos, and Pantelis Melachroinoudis.