Jonbon blew away three rivals to earn a comfortable victory in the Shloer Chase at Cheltenham.
The seven-year-old fulfilled his 4-9 favourite tag, kicking on after the final jump to continue pulling clear of 10-3 shot Edwardstone in second.
Nube Negra and Editeur Du Gite, both 14-1, finished third and fourth respectively.
"I really enjoyed myself - I hope he [Jonbon] did too," said jockey Nico de Boinville.
"He's very slick. He'll get other horses in trouble with his jumping and he'll come on loads, definitely. He wasn't 100% fit but that was a great way to start the season."
Victory on the final day of Cheltenham's November meeting further strengthens Jonbon's hopes of winning the Grade One Tingle Creek Chase at Sandown on 9 December.
The sheer ease with which trainer Nicky Henderson's charge navigated the Prestbury Park course will also send a statement to potential Queen Mother Champion Chase rivals at the Cheltenham Festival next March.Check out the latest horse racing results
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