RSN927 GRENFELL STICKS TO WINNING FORMULA May 13, 2021 6:00 am by Mick Floyd Tiggerlong Tonk takes his place in the heats of the Harrison-Dawson tonight. At 25 years of age, Grenfell became one of the youngest trainers to win a group 1 race at Sandown Park when the brilliant Orson Allen won the 2019 edition of the Harrison-Dawson. The win came soon after his maiden group 1 success in the Perth Cup and completed a remarkable season in which he would be named the 2018/19 Victorian Greyhound of the Year. Just a week after Both boast superlative records at Sandown Park, both greyhounds have won the Shootout and