John Tapp September 25, 2018 Harness Racing, John Tapp Racing, Trots COURTNEY’S YEAR OF HIGHS AND LOWS John Tapp September 25, 2018 Harness Racing, John Tapp Racing, Trots Courtney Slater was stunned when she received that phone call from HRV Stewards last December, conveying the blood-chilling news that one of her horses had returned a positive swab.