World Championship Snooker - 2010 - Day 4 Part 1

Reigning UK Champion Ding Junhui starts his 2010 World Championship with a match against Preston's Stuart Pettman. Meanwhile, on the other table, world number six Ryan Day takes on world number 47, Mark Davis. Please note that votes for all 'Pulse' questions featured in this programme will be closed during the transmission of the programme, so if you are watching on demand please do not vote.