Kyren Wilson moved into a 5-3 lead over world number one Judd Trump in their World Championship quarter-final clash at the Crucible.

Wilson drew first blood with a break of 74 in the opener but defending champion Trump responded with scores of 85 and 76 in the next two frames to edge ahead.

A run of three successive frames then helped Wilson build a 4-2 lead before Trump reduced the deficit by taking the seventh.

However, Wilson was able to restore his two-frame lead with a break of 79 just before the interval to leave Trump tailing after the first session for the third successive match.

Mark Selby held the upper hand in his quarter-final with Neil Robertson after also establishing a 5-3 lead, although the advantage could have been even greater.

Selby edged a marathon 58-minute opening frame, the longest in this year's tournament, and then reeled off the next four frames to race 5-0 in front.

However, Robertson hauled himself back into the match by winning the final three frames of the session, recording breaks of 83, 66 and 65.