National Sprint Champ out of Topgun

2008 National Sprint champion Knocka Norris has been sensationally scratched from the Group 1 Topgun.

Caretaker trainer Jason Thompson has advised Greyhound Racing Victoria that the greyhound has a sore hock and will be off the scene for a couple of months.

The scratching enables 2008 Group 1 Silver Chief winner, Regal Thyme to gain a start in the $100,000 to the winner event.