Last night's episode of the hit BBC gameshow Mastermind saw snooker fan Liam McCarthy select seven-time Crucible king Ronnie O'Sullivan as his specialist subject.
Click here to watch now on BBC iPlayer and find out if Liam was able to emerge victorious.
Liam put in an impressive performance, correctly answering 8 of his 12 during the specialist round. Take on the questions below and find out if you are a Rocket Mastermind.
At the age of 12, O'Sullivan practised regularly at the Ilford Snooker Centre with which player, who was six years his senior?
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Ken Doherty
In his debut season as a player, O'Sullivan beat Stephen Hendry's record by winning how many consecutive matches?
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38
After losing to O'Sullivan in the quarter-finals of the 2001 World Championship, which player described him as poetry in motion and snooker's equivalent of Mozart?
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Peter Ebdon
In 2019, O'Sullivan equalled the all-time record when he won his 36th ranking title with success in which tournament?
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Tour Championship
At the 2010 World Open, O'Sullivan achieved a 147 break against Mark King but, had to be persuaded to pot the final black by the match referee after he stopped at 140 in protest at the lack of a prize for the feat. Who was the referee?
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Jan Verhaas
What was the title of the 2017 television series in which O'Sullivan, as co-presenter, travelled across America exploring the world of pool?
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Ronnie O'Sullivan's American Hussle
In the semi-finals of the 2006 Northern Ireland Trophy, O'Sullivan beat which player 6-0 in just 53 minutes?
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Dominic Dale
In his autobiography, O'Sullivan describes how in 2000 his problems with depression and drug taking worsened. As a result he checked himself into which rehab clinic in London?
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The Priory
In 2011, O'Sullivan began working with which sport psychiatrist, who had previously helped some of Britain's top cyclists including Victoria Pendleton and Chris Hoy?
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Steve Peters
When O'Sullivan won the World Championship for the sixth time in 2020, beating Kyren Wilson 18-8 in the final, he took home how much prize money?
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£500,000
Which player was O'Sullivan's opponent in his 2024 World Championship quarter-final, when he sportingly refused to pot a simple red over concerns about the fairness of a ball placement?
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Stuart Bingham
At a press conference during the China Open in 2002, O'Sullivan made headlines when he sang the theme tune to which American TV series?
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Happy Days