Racing /News round-up: Aidan O'Brien confirmed yesterday that High Chaparral is likely to make his eagerly awaited return in Sunday's Royal Whip Stakes at the Curragh.

The double-Derby winner hasn't raced since scoring in the Breeders' Cup Turf and sustained a shoulder injury at the start of this season.

The colt's recovery wasn't quick enough for him to make the King George VI & Queen Elizabeth Diamond Stakes but the Curragh's Group Two pot over a mile and a quarter is his probable kick-off for the second half of the season.

"He has only done a little bit since he worked at the Curragh a few weeks ago but he is ready to start and we would love to start him now.

"If the ground is safe he will run," O'Brien said.

The Ballydoyle trainer also indicated that One Cool Cat could lead his team in the Group One Waterford Wedgewood Phoenix Stakes.

The brilliant eight-length Coventry Stakes winner Three Valleys will lead the overseas challenge but One Cool Cat could try and make the leap to Group One level.

"He's a possible runner and he wouldn't mind it if the going was fast," said O'Brien who said the Prix Robert Papin runner-up, Colossus, could wait for the Prix Morny at Deauville instead of running on Sunday.

Mark Johnston's Norfolk Stakes winner Russian Valour is now unlikely to run at the Curragh and the trainer said: "The Irish race will probably come too soon and he is more likely to wait for the Gimcrack."

This evening's Roscommon card features the first three-year-old hurdle of the season and Barry Geraghty's booking for Imazulutoo will encourage many to side with the Jessica Harrington horse who ran off 90 on his last start at the Curragh.

Dermot Weld's Naahil missed out on the Galway Festival and with the ground drying out he looks to have an excellent shout in the mile and a half handicap.

John Oxx reintroduces a couple of three-year-old maidens and both Arawan and Brave Geronimo look to hold obvious chances while the Galway gamble Potsdam could go one better in the seven-furlong handicap.