Two Group 1-winning milers, Dick Turpin and Music Show, are set to make their 4-year-old debut in the Group 2 Sandown Mile on Saturday.

A record 10 American-based runners have been nominated to the Group 1 races at Royal Ascot from June 14-18, and some of the runners will have prep races as soon as Saturday.

The two-time stakes winner Sadamu Patek is expected to be favored in Sunday’s Group 1 Japanese 2000 Guineas, the Satsuki Sho, a race postponed a week and moved from Nakayama to Tokyo Racecourse after the devastating earthquake and tsunami that struck the country on March 11.

Run over about 1 1/4 miles on turf and worth approximately $2,378,000 million, the 2000 Guineas will be Sadamu Patek’s second start of the year, preceded by a Group 2 win over about 10 furlongs in the Hochi Hai Yayoi Sho, at Nakayama on March 6.

Wootton Bassett, unraced since winning the Group 1 Prix Jean-Luc Lagardere in France last fall, will not start in the English 2000 Guineas at Newmarket on April 30 after trainer Richard Fahey said on Tuesday that the colt was too far behind in his training.

“We’ve just run out of time with him,” Fahey told the Racing Post. “To run in a Guineas, you’ve got to get them there 100 percent, and Wootton Bassett wouldn’t be.”

Wootton Bassett had a workout on Tuesday and will be pointed for the French 2000 Guineas on May 15 or the Irish 2000 Guineas on May 22.

There very well could be a European representative in this year's Kentucky Derby. Master of Hounds is being strongly considered for the race, according Monday to an Irish-based spokesman for Coolmore Stud's John Magnier, who owns Master of Hounds.

"At the moment, the plan is for Master of Hounds to run in the Derby," said the spokesman, who asked not to be identified but has spoken with authority on Coolmore-related matters in the past. "He still has a few pieces of work. After that, the trainer will decide."

Frankel, the joint champion 2-year-old male in Europe last year, stretched his unbeaten streak to five in Saturday’s Group 3 Greenham Stakes at Newbury Racecourse in England, confirming his status as a heavy favorite for the English 2000 Guineas at Newmarket on April 30.

Frankel, considered one of the finest 2-year-olds to race in England in recent years and the favorite for the 2000 Guineas on April 30, will make his 3-year-old debut as a prohibitive favorite in Saturday’s Group 3 Greenham Stakes at Newbury, England.

Trained by Henry Cecil for Juddmonte Farms, Frankel is considered a 2-5 shot for the Greenham, which is run over a straightaway seven furlongs and has drawn a field of six.

Barefoot Lady, a 14-1 outsider making her first start of 2011, caught 9-4 favorite Sing Softly in the final strides to win Wednesday’s Group 3 Nell Gwyn Stakes at Newmarket, a prep race for the English 1000 Guineas on the same course on May 1.

Ridden by Paul Hanagan for trainer Richard Fahey, Barefoot Lady prevailed by a neck, finishing seven furlongs in 1:24.44.

Black Caviar, the top-rated horse in the world according to the World Thoroughbred Rankings, earned an automatic berth in the 2011 Breeders’ Cup Turf Sprint by virtue of her 2 3/4-length win Saturday in the Group 1 Darley T.J. Smith Stakes at Royal Randwick Racecourse in Australia.

Unlike in past years, winners of 2011 Breeders’ Cup Challenge races such as the T.J. Smith will have their entry fees into Breeders’ Cup races waived. Race winners outside North America also will be provided with a $20,000 travel allowance.

Ballabriggs, racing near the front of a race that began with 40 horses and concluded, as usual, with far fewer, scored a 2 1/4-length victory Saturday in the $1,482,000 John Smith’s Grand National Chase at Aintree Racecourse in England.