Andrea Atzeni said: "I am delighted to be formally renewing my association with both Sheikh Mohammed Obaid and Roger from next season. I have been lucky enough to enjoy some of my best days on horses like Postponed and Kingston Hill and so I am really excited at the prospect of the two joining forces.
"However, it was far from an easy decision to make as it means leaving my existing job with Qatar Racing.
"I would like to thank Sheikh Fahad personally, both for his support and for agreeing to release me from my contract with Qatar Racing. I have very much enjoyed being part of the Qatar Racing team, working closely with Sheikh Fahad, David Redvers and Kevin Darley. And Bryony (Smith) in the racing office has been brilliant to work with.
" am so pleased and proud that Simple Verse was rightly re-instated as the winner of the St Leger and that I can say I rode Qatar Racing’s first British classic winner.
"Roger has played an important part in my career and Sheikh Obaid has also been very supportive of me and I hope we will enjoy a lots of winners together in the future.”