China's Ding Junhui and five-time champion Ronnie O'Sullivan both found themselves behind after the first sessions of their World Championship quarter-finals on Tuesday.

Ding was 6-2 down to Judd Trump ahead of the resumption of their last-eight encounter at Sheffield's Crucible Theatre later on Tuesday.

O'Sullivan, meanwhile, fell 5-3 behind against Stuart Bingham in a match due to continue on Wednesday.

The Essex cueman opened with a century break and then hit 118 in the fourth frame, before almost coming to grief in frame five.

O'Sullivan placed his chalk on the table as he lined up a shot, which could have incurred a seven-point penalty, but Terry Camilleri did not call the foul.

Nevertheless, Bingham recovered to win three successive frames and take control of the match.

Qualifier Anthony McGill, who ended Mark Selby's title defence in round two, was level at 4-4 with Shaun Murphy, while Australia's Neil Robertson led Barry Hawkins 5-3 in another game set to resume on Wednesday.
Source: AFP