Last year's Irish Derby hero Dylan Thomas currently remains on track to take part in Sunday's Tattersalls Gold Cup at the Curragh but his trainer, Aidan O'Brien, warns that if ground conditions turn too soft the colt will not run.

The going at headquarters is currently "good" for the Guineas festival weekend which on Sunday will also feature the Boylesports Irish 1,000 Guineas for which 14 fillies were left in at yesterday's forfeit stage.

They include both Finsceal Beo and Arch Swing, first and second in the Newmarket Guineas earlier in the month, as well as the Newmarket fourth Treat who heads a trio of possible British classic runners.

Just two British trained entries, Youmzain and Notnowcato, remain in Sunday's other Group One highlight, the Tattersalls Gold Cup, which looks to be dominated by Dylan Thomas.

The Ballydoyle star won at the Curragh on his first start of the year and then followed up in impressive fashion in the Group One Prix d'Ispahan at Longchamp on his last appearance.

This weekend's mile and a quarter highlight has been the plan since then but significantly O'Brien has also left in both Scorpion and Septimus, winner of the Mooresbridge earlier in the month, as well.

"The plan is still to run Dylan Thomas in the Tattersalls but if the going gets on the soft side, then either Septimus or Scorpion will run instead," O'Brien said yesterday.

If Dylan Thomas does get the green light to run, then he is rated a 2 to 5 favourite with Cashmans to secure the fourth top-flight success of his career.

A mixed weather outlook is being forecast for the rest of the week but a significant amount of rainfall from the tail end of a rain belt is a possibility for Friday.

Other likely runners in the Tattersalls are last year's 1,000 Guineas winner Nightime as well as the unbeaten Danak from John Oxx's yard.

Bad weather wouldn't be good news for the Guineas principals either with the Oxx team already stating that Arch Swing will not get the chance for revenge against Finsceal Beo if the going turns soft.

Too much cut in the ground is also being blamed for Finsceal Beo's subsequent narrow defeat in the French Guineas and Jim Bolger is hoping a similar problem doesn't arise this time as his filly tries to emulate the only other runner to complete the Newmarket-Curragh double, Attraction in 2004.

"She is very well. In France she couldn't show her usual speed on the rain-softened ground. Hopefully conditions will be more in her favour on Sunday. If they stay as they are at present, that will be grand," Bolger said.

Finsceal Beo is likely to start a warm favourite at the weekend and early ante-post action yesterday made her a 4 to 5 favourite.

Arch Swing is rated an 11 to 4 second best by Cashmans while Treat is a 7 to 1 shot to provide Johnny Murtagh with a first success in the race.

A spokesman for Treat's trainer Mick Channon said: "John Murtagh will ride and we think the stiff Curragh mile will be to her advantage. She was in season last week so she had an easy time of it but she will have a nice breeze tomorrow and then it will be all-systems-go."

Boule Masquee was a 20 to 1 shot when looking all over a winner at Tipperary only to be touched off on the line by Aqraan. David Myserscough's horse will be one of the market leaders in tonight's three-year-old maiden at Sligo and could be better suited by the trip than Washington Poste.

Freda's Choice's racing career looked to be over after the in-foal filly won at Naas last week but she gets another start in the six-furlong handicap this evening and a 4lb penalty shouldn't stop her from making her presence felt.

1,00 Guineas(Cashmans): 4-5 Finsceal Beo, 11-4 Arch Swing, 7 Treat, 10 Alexander Tango & Indian Ink, 20 Truly Mine, Peeping Fawn & Boca Dancer, 25 Dimenticata, 50 Bar.

Tattersalls Gold Cup(Cashmans): 2-5 Dylan Thomas, 5 Notnowcato, 6 Danak, 8 Youmzain, 14 Mustameet, 20 Nightime, Fracas, 25 Bar.