and Barry Hawkins went head-to-head at today as the world No. 1 booked his place in the quarter-finals. The tournament got underway on Sunday, with fighting back to defeat after in the lead-up to the event.

overcame Gary Wilson 6-3 in his first match to round off an enthralling opening day.

then thrashed 6-1 yesterday after Ding Junhui had got the better of in a 6-5 thriller.

O'Sullivan, who has won The Masters eight times, isn't playing this year due to medical reasons, with Robertson drafted in to take his place.

And his snooker rivals will be aiming to make the most of his absence by going after silverware.

That includes , who defeated Ding Junhui 6-2 to book his place against Selby in the second of Tuesday's matches.

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