John Tapp October 9, 2018 Harness Racing, John Tapp Racing, Harness Racing NSW, Trots JOE AND MARY ARE PERFECT PARTNERS John Tapp October 9, 2018 Harness Racing, John Tapp Racing, Harness Racing NSW, Trots Joe and Mary Rando’s decision to formalise a training partnership two years ago, came as no surprise to family and friends.