World Championship 2017: Ding Junhui takes charge against Ronnie O'Sullivan
|World Championship 2017|
|Venue: The Crucible Theatre, Sheffield Dates: 15 April - 1 May|
|Coverage: Watch live on BBC TV, BBC Red Button, Connected TVs, online and app.|
World number four Ding Junhui dominated the second session of his World Championship quarter-final with Ronnie O'Sullivan to take a 10-6 lead.
Having shared eight frames in the opening session, the pair began Tuesday evening by winning a frame each.
But breaks of 64, 65, 120, 59 and 56 ensured China's Ding took complete control of the 25-frame match.
However, a typically rapid 104 break stopped the rot for five-time winner O'Sullivan and gave him hope.
It was another two hours of gripping entertainment that maintained the trend of a break of at least 50 in every frame.
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In the other game to resume on Tuesday evening, Scotland's John Higgins stormed into an 11-5 lead against 25-year-old Kyren Wilson.
The afternoon session saw reigning champion Mark Selby build a 6-2 lead over Hong Kong's Marco Fu, while Barry Hawkins is 5-3 ahead against Scottish qualifier Stephen Maguire.
Ding sparkles in the evening
Ding, 30, has not beaten world number 12 O'Sullivan in a ranking event since his 9-6 victory in the Northern Ireland Trophy in 2006.
There is a strong possibility of that run coming to an end at the Crucible after his stunning display on Tuesday evening, which began with a frame-winning 63 clearance in the ninth.
O'Sullivan came from behind to win the next but was unable to repeat the feat in frame 11 as Ding seized control.
Storming into a 7-5 lead before the interval, he resumed with a 120 break and went on to stretch his lead to 10-5 with a 58 in frame 15.
O'Sullivan, though, produced a defiant rapid-fire 104 in the final frame to give himself a chance of matching Stephen Hendry's record of playing in 12 World Championship semi-finals.
Higgins hammers home his advantage
World number 14 Wilson had levelled from 2-0 down in the morning, helped by a 92 break, but damaged his cue tip and, after a brief stoppage for repairs, saw four-time Crucible champion Higgins open up a 5-3 lead with breaks of 62 and 59.
The Scot began the evening with a 129 and, after the next two were shared, added breaks of 74 and 135 either side of the interval to lead 9-4.
Wilson responded well with a 97 but Higgins won the last two to leave himself two frames from victory at 11-5.
Deja vu for Fu
World number eight Fu has got used to doing things the hard way at this year's tournament, having fought back from 7-2 down to beat Luca Brecel and recovered from 4-1 behind to see off Neil Robertson.
There seemed little chance of a comeback when he trailed world number one Selby 5-0, the Leicester man finding some of his best form to compile breaks of 80, 72 and 94.
Fu went more than an hour without potting a ball before taking a scrappy sixth frame and making it 5-2 with a stylish break of 60.
But Selby got Fu in a fuddle on the final red and went on to take a four-frame advantage at 6-2. They resume on Wednesday.