It's the fourth and final day of the Doncaster St Leger meeting today featuring the big event of the festival.

It’s the oldest Classic in the world run over an extended one and three quarter miles at 3.50 — and John Gosden can bag yet another Town Moor feature with Excess Knowledge.

A progressive colt, he was desperately unlucky not to win the Gordon Stakes at Goodwood and has reportedly flourished at home since that run.

He remains open to plenty of improvement and, whereas the recent rain won’t hinder his chances, it could result in Galileo Rock, his biggest rival in the betting, not even running.

That could see the forgotten horse in the race, Libertarian, as the biggest danger as the Epsom Derby second steps up to a mile and three quarters for the first time in his career.

His blowout in the Irish Derby didn’t surprise me as he was never at home on the fast ground and that run may have come too quickly after a game second in the Derby for this big, raw-boned individual.

Connections have not been too optimistic about his chances as he hasn’t been working well at Newmarket, but he is notorious for that and he only comes alive on course.

Of the remainder, Great Hall is on the up and Oaks winner Talent will love the juice in the ground, even though the form of that race adds up to nothing, while Havana Beat is another outsider with strong place claims as well.

The Portland Handicap over an extended five furlongs at 2.40 is the main betting event of the day and is one of the most competitive sprint handicap events of the season.

Luck in running is of paramount importance, as is being drawn where the pace is.

Not surprisingly it’s a tough race to call, but I fancy that Elusivity, that  most enigmatic of characters, could run well at around the 16/1 mark.

Back down to a reasonable handicap rating of 100 and with a certain Kieren  Fallon on board, he could be well drawn in stall number 16 and gets the vote over last year’s winner Doc Hay, Ajjaadd and the unpredictable outsider Monsieur Chevalier.

The under-rated Gregorian has strong claims in the Group Two OLBG Park Stakes at 3.15, while in the 6.05 finale the fresh Levitate has value.

For the nap of the day I am going to go to Chester and back Al Muheer in the 2.20.

Ruth Carr’s old stager has shown signs of late that his turn is near, while he has the juice in the ground he so loves and is weighted to go close.

Tango Sky is an outsider I like with the first-time blinkers on in the 4.45 at the Cheshire track, while Dambuster can follow up his recent victory by landing the 2.50 at Bath under George Baker.