The 2016 English Greyhound Derby champion Jaytee Jet won his third round heat .
It was Clares Rocket who was once again the fastest with a 29.58 win to remain unbeaten .
The 2016 English Greyhound Derby champion Jaytee Jet won his third round heat but it was Clares Rocket who was once again the fastest with a 29.58 win to remain unbeaten .