Logician advertised his Classic credentials with a convincing success in the Great Voltigeur Stakes at York but trainer John Gosden has warned he’s no certainty to line up in the St Leger.

The son of Frankel made the step up from handicap company in to a Group 2 with plenty in hand as he dismissed much more experienced rivals with ease to stretch his perfect record to four from four. The Great Voltigeur is a recognised St Leger trial and, pre-race, connections of Logician had been eager to test the colt with a view to next month’s final British Classic of the season on Town Moor.

The performance was impressive, with Aidan O’Brien’s Constantinople one-and-a-quarter lengths down in second and a yawning seven-lengths back to Norway in third spot. The Khalid Abdullah-owned grey always appeared to be going best of all in the home straight under Frankie Dettori and, in truth, the Italian never had to ask for maximum effort from his mount.

Gosden was delighted to win at York but the Clarehaven handler says there is more than one option for Logician’s next move. “I couldn’t be more pleased with him. He’s still a tender, young horse who had won a maiden, a novice and a handicap, so it was a big jump,” said the trainer.

“He’s going the right way. We’ll see how he is in the next 10 days before we make any decision as to where he goes next. “There is one obvious option (St Leger), but there are other options if you stay at a mile and a half.

“I need to speak to the jockey and the racing manager. There are a lot of discussions to be had in the next 10 days.” Logician is now 2.75 favourite to win the St Leger at Doncaster on September 14.