A King George winner's sibling and impressive juvenile form - Chris Cook's three things to note on Friday

You can read Chris Cook's three things to note and much more in our morning email The Front Runner, exclusively for Members' Club Ultimate subscribers.

Subscribers can get more great insight, tips and racing chat from The Front Runner every Monday to Friday. Those who aren't yet signed up for The Front Runner should click here to sign up and start receiving emails immediately!

Not a Members' Club Ultimate subscriber? Click here to get 50% off for three months!

1. Pyledriver's half-sister makes her debut

While we wait for the King George winner Pyledriver to return the track, possibly in the Hardwicke Stakes next month, a sibling of his makes her debut in a small-field maiden race for fillies at Ascot. Shagpyle is a Frankel half-sister to Pyledriver and to two other winners, Stockpyle and Country Pyle - all are out of the French mare La Pyle. Pyledriver scored at Listed level as a juvenile, so three-year-old Shagpyle has evidently not been quite so quick to show whatever ability she may have. In a race of horses with ha-ha names, she takes on Sea Me Dance (by Sea The Stars) and So Farhh So Good, whose sire you can probably guess. So Farhh So Good showed some promise when fourth in November, experience which ought to help her here.

Shagpyle15:35 Ascot

View Racecard

Jky: Lewis Edmunds Tnr: William Muir & Chris Grassick

2. William Haggas-trained Derby entrant runs at Chester

William Haggas has five horses still entered in the Derby and one of them makes his debut today, in a 1m4½f maiden race at Chester. Realistically, Medieval Gold would have to outrun his pedigree to be a Derby contender and this debut comes rather late but it's interesting that he was thought to be worth the entry at some stage. The son of Camelot, out of a Shirocco mare, carries the hooped colours of Teme Valley. Haggas made an unusually quiet start to May and withdrew both his entrants on Sagaro day because of bad scopes, which set a few tongues wagging. Wins for Amleto and Hamish at Chester this week must have been reassuring. Haggas also runs Mujtaba and Je Ne Sais Quoi today.

Medieval Gold15:45 Chester

View Racecard

Jky: Richard Kingscote Tnr: William Haggas

3. Smart juvenile form to receive another boost?

Desert Master could be one to look out for in the small-field maiden race that opens Nottingham's evening card. From the Newmarket yard of James Tate, he overcame greenness to be second on his debut at Ripon last month and the form has had a significant boost this week. Ziggy's Phoenix, who won by a comfortable length and three-quarters, followed up in the Lily Agnes that opened Chester's meeting on Wednesday. Desert Master faces two unraced rivals this time.

Desert Master17:15 Nottingham

View Racecard

Jky: Callum Rodriguez Tnr: James Tate

Read these next:

What have connections said about their leading Derby and Oaks contenders?  

'The first part of the plan has gone well' - Harry Derham relishing tilt at £100,000 Swinton Hurdle with Brentford Hope  

Tom Segal tipped 1,000 Guineas winner Mawj at 20-1 - subscribe now with 50% off and don't miss out on a massive month for Pricewise 

The Front Runner is our unmissable email newsletter available exclusively to Members' Club Ultimate subscribers. Chris Cook, a four-time Racing Reporter of the Year award winner, provides his take on the day's biggest stories and tips for the upcoming racing every morning from Monday to Friday. Not a Members' Club Ultimate subscriber? Click here to join today and also receive our Ultimate Daily emails plus our full range of fantastic website and newspaper content.