Ronnie O'Sullivan leads Barry Hawkins 10-7 after the first day of the World Championship final at the Crucible.

But so far it has not been the walkover many had predicted, with Hawkins making the defending champion sweat for the first time in the tournament.

Four-time winner O'Sullivan, 37, made four century breaks to surpass Stephen Hendry's previous record of 127 at the venue.

But world number 14 Hawkins was not overawed, making four half-centuries and one century of his own.

Ronnie O'Sullivan (Eng) 10-7 Barry Hawkins (Eng)

87-4 (74), 92-10 (92), 0-98 (88), 0-81 (81), 13-101 (50), 76-7 (76), 113-0 (113), 104-0 (100), 0-73, 83-37, 9-61, 75-0, 0-91 (83), 4-133 (133), 103-0 (103), 117-5 (106), 69-62