λύων ἡνίαν ἀριστερὰν. He was turning sharply round the goal from right to left, and was therefore pulling the rein of the left trace-horse. He slackened this rein a moment too soon, thus letting the horse draw with more force. The effect was to create an angular velocity, which brought the left wheel into collision with the goal. See note in Appendix. The notion that “λύων” has supplanted a word of the opposite sense (‘tightening’) appears mistaken.