John Tapp September 4, 2018 Horse Racing, John Tapp, Podcast Episode 24: Tappy chats with Bryan Martin John Tapp September 4, 2018 Horse Racing, John Tapp, Podcast Many of Bryan Martin’s friends were surprised when he quit race calling at age 57 in 2007. They were not one bit surprised when he decided on a comeback for Radio SEN, three years later.