By Jon Lees Commentators are renowned for doing their homework at race meetings. Not only do they make themselves familiar with the colours worn by the jockeys but they also study the form, pedigree and names of the runners. So that when a race unfolds in front of them, they have absorbed as much information as possible to describe the action with accuracy and sometimes humour. An opportunity fell into the lap of Brett Davis in his role as lead race caller for Radio TAB Australia on Monday. The renowned International race commentator once recalled in an interview that mastering his art “takes …