Echo racing expert Chris Wright has seen more Grand National winners than most.In our fourth Grand National podcast, Chris considers the special features a horse must have to become a Grand National victor.He also runs his expert eye over the favourites in this year's race. From BlakLion to Tiger Roll to Total Recall and more, which one is worth your money?Chris has the answers. For information regarding your data privacy, visit acast.com/privacyLearn more about your ad choices. Visit megaphone.fm/adchoices