Ronnie O'Sullivan is one frame away from setting up a quarter-final with Stuart Bingham at the World Snooker Championships in Sheffield.
The Rocket is 12-4 up on Matthew Stevens after dominating both sessions of the match. O'Sullivan has had three century breaks in the match so far with the highlight being a 139 break this afternoon.
O'Sullivan looks likely to be joined in the quarter-finals by Shaun Murphy who also holds a 12-4 lead over Joe Perry. Murphy won nine frames in a row to take a 10-1 lead but Perry responded by taking three of the next five frames to ensure the match went to the the third and final session. Should Murphy secure the victory he will take on Scotland's Anthony McGill who ended the reign of last years winner Mark Selby.
Neil Robertson, who won the title in 2010, leads Ali Carter 11-5 and looks likely to set up a quarter-final with Barry Hawkins. The Australian has hit six century breaks in the tournament so far including the current highest break of 143.
In the final quarter-final Judd Trump leads Marco Fu 10-6. Trump looks to be in a very good position but Fu will still believe he can come back to reach the next round. The winner will take on world number three Ding Junhui in the next round with Trump looking the more likely to get the win.
Monday's play will see all four matches played to a finish ahead of the quarter-finals that will start on Tuesday.
Monday's Order of Play
1pm - Shaun Murphy 12-4 Joe Perry; Judd Trump 10-6 Marco Fu
7pm - Ronnie O'Sullivan 12-4 Matthew Stevens; Neil Robertson 11-5 Ali Carter.