Ronnie O'Sullivan will come face to face with snooker's fastest player when he begins his bid for a sixth World Snooker Championship on Sunday.
O'Sullivan has been paired with Thailand's Thepchaiya Un-Nooh, who swept through qualifying and whose pace has been officially recorded at less than 17 seconds per shot.
Fans with tickets for the first-round clash can expect a fast and furious session given O'Sullivan's own reputation for speed, not least his five-minute maximum break in the 1997 tournament.
Thepchaiya, the current world number 20, pushed eventual champion Judd Trump to a final frame decider in the first round last year, and also came close against John Higgins on his Crucible debut in 2018.
Speaking after his Tuesday night win over Liam Highfield in qualifying, Thepchaiya said: "It's the third year I've qualified and I've done well in the last two years - but I will hopefully not get Judd Trump again."
Trump, who is aiming to become the first first-time winner to defend his title at the Crucible, will play his first-round match to a finish on Friday against world number 26 Tom Ford.
The 36-year-old Ford has reached the first round on three previous occasions and is yet to win a match in the final stages.
Northern Ireland's Mark Allen is the No 4 seed and will face tournament debutant Jamie Clarke of Wales, who came through qualifying.
Allen's fellow Antrim native Jordan Brown will face three-time world champion Mark Selby on his tournament bow.
The 32-year-old, ranked 73rd in the world ahead of the qualifiers, knocked out 36th ranked Ryan Day 10-6 to advance to the tournament proper.
Ken Doherty's conqueror Mark King will take on Ding Junhui, while Liang Wenbo, who held his nerve in the deciding frame of his final qualifying round match to edge a seven-hour epic 10-9 against Fergal O’Brien, has been pitted against Neil Robertson.
Anthony Hamilton, who has expressed grave concerns over safety at the tournament following the decision to admit a limit number of fans, will also start on Friday against eighth seed Kyren Wilson.
Alan McManus, the oldest player to reach the Crucible since Steve Davis's final appearance at the age of 52 in 2010, takes on Mark Williams, while four-time winner John Higgins starts against former finalist Matthew Stevens.
Full draw
Judd Trump v Tom Ford
Yan Bingtao v Elliot Slessor
Stephen Maguire v Martin Gould
Kyren Wilson v Anthony Hamilton
John Higgins v Matthew Stevens
David Gilbert v Kurt Maflin
Jack Lisowski v Anthony McGill
Mark Allen v Jamie Clarke
Mark Williams v Alan McManus
Stuart Bingham v Ashley Carty
Ding Junhui v Mark King
Ronnie O'Sullivan v Thepchaiya Un-Nooh
Mark Selby v Jordan Brown
Shaun Murphy v Noppon Saengkham
Barry Hawkins v Alexander Ursenbacher
Neil Robertson v Liang Wenbo
