Dynaste (4-9 favourite) turned in another faultless round of jumping to land the Grade Two Fuller's London Pride Novices' Chase at Newbury.
David Pipe's charge made a dream start to his chasing career when winning at Cheltenham earlier this month and he kept up the good work under Tom Scudamore.
The front-running Valmari was still in front four fences from home with Dynaste switched to her outside to challenge, but Valmari failed to pick up at all, taking a heavy fall and leaving Dynaste in front.
Court In Motion tried to make a race of it but Scudamore was always in control and came home four and a half lengths clear.
Pipe said: "His jumping was neat and accurate. It probably didn't tell you a lot more but he's done it very nicely.
"Whether his end target will be two and a half or three miles, we don't know yet but he's safely on to the next step.
"He does go slightly left but the Feltham Chase (Kempton, December 26) will have to come into the mix."
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