In the ancient Olympic Games, as well as the other Panhellenic Games, there were both four-horse (tethrippon, Greek: τέθριππον) and two-horse (synoris, Greek: συνωρὶς) chariot races, which were essentially the same aside from the number of horses [REF].
The race was begun by a procession into the hippodrome, while a herald announced the names of the drivers and owners.