BETTING SHAKE-UP AFTER ENTHUSED DISAPPOINTS Bookmakers were forced into a shake-up of betting for the Sagitta 1000 Guineas as Sir Michael Stoute`s second string Regal Rose obliged in the Shadwell Stud Cheveley Park Stakes.Stoute`s other runner Enthused had been at the forefront of betting for the first fillies` Classic but she was a disappointing sixth in the Group One contest.Regal Rose, racing for only the second time and carrying the colours of the Cheveley Park Stud, forged to the front with more than a furlong to travel under Frankie Dettori and held Toroca by one length.Ladbrokes now make Regal Rose and Enthused 10-1 for the 1000 Guineas with their stablemate Karasta the 6-1 favourite.But the Tote have Regal Rose the clear 6-1 favourite in their list while William Hill have Regal Rose sharing favouritism with Karasta at 6-1.Stoute was giving no clues as to which one he believes is the best prospect.'I might be able to tell you a bit more after the early trials,' he said.But Dettori said: 'You have to make Regal Rose favourite she has a good cruising speed and an excellent turn of foot. With a faster pace she would have been more impressive.Stoute felt Enthused, the 11-8 favourite, may have just lost her edge and was unsuited by the slow pace.