World snooker championships: Ding holds upper hand over Trump, Selby into quarters

Ding Junhui held all the aces in his second round tie with Judd Trump, the Chinese star leading 6-2 after Sunday's morning session at the world championships in Sheffield. The pair split the first four frames, 2011 runner-up Trump levelling the score at 2-2 when he compiled a break of 106.
But Ding was stung into action, winning the next four to reach the break in dominant form as he closes in on a quarter-final slot.
He made his fourth century of the tournament in the sixth frame, making 112 following Trumps' break.
For Trump there is a sense of history repeating itself, as he had to pull off a great escape to reach the second round against Ding's fellow countryman Liang Wenbo after falling 7-3 behind.
Ding, who had to qualify for the Crucible after dropping out of the world's top 16, won a record-equalling five major professional tournaments two years ago.
The 29-year-old has enlisted the services of Wales' 1979 world champion Terry Griffiths in his bid to win the sport's premier prize.
In other action later Sunday title favourite Ronnie O'Sullivan trails in his second round clash with Barry Hawkins 5-3.
O'Sullivan is seeking a sixth victory at the Crucible and a first since 2013.
And Kyren Wilson resumes with a stunning 7-1 first session lead over Mark Allen.
In a late Saturday finish world number one Mark Selby repelled qualifier Sam Baird 13-11.
World number 59 Baird reeled off four consecutive frames to claw his way back to level at 11-11 in the late night thriller before Selby secured the two frames required to book his quarter-final ticket.