Cardsharp and U S Navy Flag could renew their rivalry in the £75,000 Group Two Dubai Duty Free Mill Reef Stakes (2.50pm, 17 confirmations) at Newbury on Saturday.

The six-furlong contest boasts an excellent recent roll of honour, with the last two winners Ribchester (2015) and Harry Angel (2016) gaining five Group One prizes between them this year.

Cardsharp (Mark Johnston) and U S Navy Flag (Aidan O’Brien) clashed in the Group Two July Stakes at Newmarket in July, with Cardsharp coming out on top by a length-and-three-quarters.

Cardsharp has since finished third under a penalty in both the Richmond Stakes at Goodwood and Gimcrack Stakes at York, while U S Navy Flag posted a career-best last time out when taking the Group Three Round Tower Stakes by six lengths at the Curragh on August 27.

O’Brien, who is yet to win the Dubai Duty Free Mill Reef Stakes, has also left in Phoenix Stakes seventh Declarationofpeace.

Invincible Army (James Tate) was fourth in the July Stakes and subsequently finished one place ahead of Cardsharp at York. The son of Invincible Spirit provided his trainer with a first Group race success in the Sirenia Stakes at Kempton Park.

Other notable names going forward include Acomb Stakes runner-up James Garfield (George Scott) and Hamdan Al Maktoum’s Enjazaat (Owen Burrows), a clear-cut winner of the Listed Ripon Champion Two-Year-Old Trophy on August 28.

One of the least experienced among the confirmations is the Tom Dascombe-trained No I’m Easy. He was second to subsequent Listed scorer Mythical Magic on his debut at Ascot in July before going one better on his next start in a six-furlong novice contest at Thirsk on August 21.

Day two of the Dubai Duty Free International Weekend also features the £60,000 G3 Dubai Duty Free Legacy Cup (2.15pm) over 11 furlongs, which has 15 entries including My Dream Boat (Clive Cox), who captured the G1 Prince Of Wales’s Stakes at Royal Ascot last year.

The Dubai Duty Free International Weekend starts with a seven-race card tomorrow (Friday) when the highlight is the Listed Dubai Duty Free Tennis Championships Cup over seven furlongs.