Hollie Doyle's tenure as retained rider for Imad Al Sagar's Blue Diamond Stud has ended. Champion jockey Oisin Murphy will become the new first-call rider for the operation. The best runner ridden by Doyle in the Al Sagar silks was undoubtedly the G1 Prix de Diane-winning Nashwa (Frankel), who also landed top-flight scores in the Nassau Stakes and Falmouth Stakes with Doyle aboard. Said Al Sagar's racing manager Teddy Grimthorpe, "We're keen to stress that we have had a fantastic relationship with Hollie throughout, and we hope that will continue...