Rocket runs out of steam in Cahill shocker
An exhausted Ronnie O'Sullivan will spend the rest of the World Championship as a spectator after suffering a shock first-round defeat to amateur James Cahill at the Crucible.
The Rocket was favourite to claim a sixth world crown in Sheffield but looked out of sorts throughout a 10-8 defeat.
"I just felt a little bit under the weather, my legs are like lead and my arms feel really heavy," O'Sullivan said.
Cahill came through three rounds of qualifying to make his Crucible debut and the 23-year-old said: "I'm glad I held myself together against the best player in the world on my Crucible debut, it doesn't get any better than that."
Antrim's Mark Allen trails China's Zhou Yuelong 7-2.