The British Horseracing Authority on Friday eased strict new rules governing the manner in which jockeys wield their whip.

Orfevre can become the first horse in six years to sweep Japan’s Triple Crown when he starts in Sunday’s Group 1 Japanese St. Leger, the Kikuka Sho, at Kyoto, Racecourse.

The winner of the Japanese 2000 Guineas in April and the Japanese Derby in May, Orfevre warmed up for Sunday’s race over about 1 7/8 miles on turf by winning the Group 2 Kobe Shimbun Hai Stakes over 1 1/2 miles at Hanshin Racecourse last month.

By Stay Gold, Orfevre is trained by Kenichi Ikezoe for Sunday Racing Co. Yasutoshi Ikee has the mount.

Camelot, the sharp winner of a maiden race at Leopardstown Racecourse in Ireland in his career debut in July, will be a short-priced favorite in his second career start, Saturday’s Group 1 Racing Post Trophy at Doncaster, England.

Trained by Aidan O’Brien for Derrick Smith, Susan Magnier, and Michael Tabor, Camelot is listed at 12-1 in future-book betting for the 2012 English Derby. A colt by Montjeu, Camelot was a 3-2 chance on Thursday to win the Racing Post Trophy, which is run over a mile for entire colts and fillies. The race has a purse of approximately $314,000.

The Cox Plate, Australia's most important and richest weight-for-age event, will be conducted late Saturday afternoon at Melbourne's unique Moonee Valley Racecourse. In the buildup, the 2040-meter event (approximately 10 furlongs) and its expected field of 14 has been hyped as a showdown between longtime favorite Jimmy Choux and upstart sensation Helmet.

The $3 million Cox Plate, a key prep for the Melbourne Cup on Nov. 1, is the richest of nine races on Saturday’s program at Moonee Valley Racecourse in Australia. But the lucrative race must share attention with Black Caviar’s attempt to stretch her unbeaten streak to 15 races in the $300,000 Schweppes Stakes on the undercard.

Black Caviar has four rivals in the Group 2 Schweppes Stakes, which is run over about six furlongs. Black Caviar won her 14th race in the Group 2 Schillaci Stakes at Caulfield, Australia, on Oct. 8, her first start since May.

[bc_video_id:236506:]

Aventura, who missed the Japanese spring classics for fillies because of a leg injury, won her third consecutive race since her return to racing in Sunday’s Group 1 Shuka Sho at Kyoto Racecourse, the final leg of the Japanese Triple Crown for fillies.

Aventura won by 1 1/4 lengths over 21-1 shot Kyowa Jeanne. Ridden by Yasunari Iwata, Aventura stalked the pace before taking the lead in the stretch.

Campanologist won the fourth Group 1 race of his career, and second in as many races, in Sunday’s Gran Premier Jockey Club Italiano at San Siro Racecourse in Italy.

Sent off as the 1-2 favorite, Campanologist, 6, closed from fifth in a field of six to win by 1 1/4 lengths over the 3-year-old Arrigo, who closed from last in the race over 1 1/2 miles. Campanologist was ridden by Frankie Dettori. The race was worth approximately $411,000.

Cirrus des Aigles caught So You Think in the final 50 yards of Saturday’s Group 1 Champion Stakes at Ascot Racecourse in England, but the race was marred by a suspension and massive fine given to winning jockey Christophe Soumillon for excessive use of the whip.

Frankel further burnished an already glowing reputation Saturday with an easy win in the Queen Elizabeth II Stakes at Ascot, his ninth victory without a defeat.

Adelaide-based mare Southern Speed, the recipient of an ideal trip under Craig Williams, stormed home four wide in the stretch to wear down the former British-trained Green Moon and seize the $2.5 million Caulfield Cup.