Australia's Neil Robertson needs just three more frames to reach the quarter-finals of the World Championship after maintaining command of his second-round tie with Shaun Murphy.

Robertson won the opening session 5-3 and took the second by the same margin to open up a 10-6 lead ahead of Friday's final session at the Crucible in Sheffield.

The 2010 champion snatched the first frame of the day with a break of 67 and continued to score heavier than Murphy, who managed a highest break of 59 in the session but won two hard-fought frames to trail 8-6.

Murphy, the 2005 champion, then looked set to get within a single frame for the first time since losing the opening two of the contest without potting a single ball, only to miss a difficult brown in the 15th frame.

Robertson took full advantage to clear the colours and won the final frame of the session as well to justify his position as tournament favourite following the shock defeat for five-time champion Ronnie O'Sullivan at the hands of James Cahill.

Cahill was also in action on day seven and had to fight hard to stay in touch with Scotland's Stephen Maguire, who ended their opening session with a two-frame advantage.

Aided by breaks of 67, 103, 56, 61 and 125, two-time semi-finalist Maguire led 2-0 and 5-2 but Cahill dug deep to claim the final frame on the colours and trail 5-3.