One trainer, one jockey, one horse and one race to watch on Saturday

One trainer

As is so often the case on a big day, it simply has to be John Gosden. He saddles what have been dubbed by bookmakers as the four horses of the apocalypse and will be hoping Frankie Dettori – who is on board three of the fab four – is airborne in the winner's enclosure on more than one occasion on Champions Day.

Proceedings kick off with Stradivarius in the Long Distance Cup (1.25). The outstanding stayer will be bidding to crown a perfect season, but conditions won't be ideal and he faces a new rival in the shape of Flag Of Honour.

Lah Ti Dar's family has been in the spotlight in recent days and it's time for her to step up to the plate in the Fillies & Mares (2.40). The filly was unbeaten in three starts before she ran a huge race to be second to Kew Gardens in the St Leger and the drop back in trip should not be a concern.

Roaring Lion, the leading three-year-old of the season, also drops back in trip in the QEII (3.15) after flourishing over two furlongs further in the Dante, Eclipse, Juddmonte International and Irish Champion Stakes.

Talking horse Cracksman will have the final word in the Champion Stakes (3.50) where he will be bidding to repeat last year's success. Can he bow out in style?

One jockey

Oisin Murphy has been the go-to guy for Group 1 success this season. He began this season's spree with his first domestic top-flight victory aboard Roaring Lion in the Coral-Eclipse, and that colt would go on to win the Juddmonte International and Irish Champion Stakes.

Lightning Spear gained a deserved success under Murphy in the Sussex Stakes at Glorious Goodwood and the jockey clearly gelled with The Tin Man, who came through the mud to land the Sprint Cup at Haydock, while Royal Marine kept the show on the road with a promising win in the Jean-Luc Lagardere on Arc weekend.

Murphy is reunited with favourite The Tin Man in the British Champions Sprint (2.00), a race he won two years ago, before he rides Flattering for Aidan O'Brien in the Fillies & Mares (2.40).

The jockey is confident Roaring Lion will not have an issue with dropping back to a mile in the QEII (3.15), where the colt will be bidding for a fourth Group 1.

Murphy's book of rides is completed by the formerly smart juvenile South Seas in the Balmoral Handicap (4.30).

One horse

Cracksman was so spectacular in the Champion Stakes last year that it seemed inevitable he would soar to stardom as a four-year-old.

His third season started with a bang in the Prix Ganay, where he effortlessly powered away from Wren's Day and Cloth Of Stars.

But alarm bells started ringing at Epsom as he was pushed along at various stages and only just managed to get the better of Salouen in the Coronation Cup when a 2-7 hotpot.

His trainer suggested he was getting distracted by the fillies following his Prince of Wales's defeat to Poet's Word at Royal Ascot. That form didn't work out too badly, but it was still some way shy of his best and connections will be hoping blinkers can spark a revival.

So which Cracksman will show up – the Frankel-esque superstar we saw demolish the field on this day last year, or the lethargic ladies' man who looked down and out at Royal Ascot?

One race

It's a cliche but there really aren't many races Aidan O'Brien hasn't won – and the Caulfield Cup (6.40) is one of them.

Often a guide to the Melbourne Cup next month, the 1m4f handicap has been won by some of the greats. Dunaden took the Melbourne Cup in 2011 before landing the Caulfield Cup in 2012.

O'Brien saddled Johannes Vermeer to finish third in this event 12 months ago, and he would go one better in the big one at Flemington.

This year the Ballydoyle trainer relies on The Cliffsofmoher, formerly known as Cliffs Of Moher, who caught the eye when finishing strongly to be fourth to Benbatl in the Ladbrokes Stakes last Saturday.

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