That is how Myrtilus let himself be transformed into a saboteur letting Pelops 1 get a stolen victory. For King Oenomaus 1 lost the race, being entangled in the reins and dragged to death or, as some say, being killed by Pelops 1. And when the king was dying he discovered Myrtilus' treachery and, cursing him, he prayed that he might perish by the hand of Pelops 1. Pelops 1 feels respectable now. But now, when Pelops 1 saw that the king was dead, the bride was his, and himself was about to become a respectable man of power inheriting the kingdom of the man he had murdered, he started to see things in a different light thinking that the whole affair would disgrace him.
Traitor receives payment.
So he refused to keep his promise to Myrtilus, who was both accomplice and witness, and he cast him into the sea. However, some say that when all three were returning from the race Pelops 1 withdrew to fetch some water and that Myrtilus then tried to rape Hippodamia 3. When Pelops 1, on his return, learned what had happened he threw Myrtilus into the sea, which was called after him the Myrtoan Sea, which is between the Peloponnesus and the islands called Cyclades. But before Myrtilus died he uttered curses not only against Pelops 1 but also against his whole house, for, they say, the punishment for breaking an oath also comes upon the descendants of the sinner. For ever since Myrtilus sank to rest beneath the waves, hurled to utter destruction from his golden chariot in disgraceful outrage, from that time to this, outrage and its many sorrows were never yet gone from this house.