Ronnie O’Sullivan has withdrawn from next week’s Shanghai Masters, the first ranking tournament of the new season.
In a statement on his official website, http://www.ronnieosullivan.biz/, the world no.5 was said to have injured his back.
The statement added: “Ronnie has been advised by his doctor not to travel and that bending over a table will cause more damage.
“The injury is not serious, however he does need to rest and not risk making it worse.
“He apologises to his fans and to all those who were looking forward to seeing him perform.”
O’Sullivan, 31, previously withdrew from the 2005 China Open in Beijing with an undisclosed medical complaint.