Complex sentence: The horse was backed down from 10/1 to 4/1 favourite just before the off, and, shortly after entering the straight, Conolly sent the horse on for an easy three-length victory.
Split into simpler sentences: The horse was backed down from 10/1 to 4/1 just before the off. Shortly after entering the straight, Conolly sent the favourite on to draw away for an easy three-length victory.