The 2010 world champion Neil Robertson completed a 10-4 victory over Ken Doherty to set up a second-round clash with England's David Gilbert.
Dubliner Doherty - world champion 15 years ago - entered the session 7-2 in arrears and there was no way back.
The Australian, who lost to Judd Trump to relinquish his title in round one last year, said: "It's nice playing this year without being the defending champion. It's nice coming in under the radar."
Seven-time champion Stephen Hendry overcame a wobble to convert his 8-1 overnight lead over Stuart Bingham to a 10-4 victory.
When the evening's opening three frames went to Bingham, it raised the prospect of a comeback, but Hendry soon quashed that and goes on to tackle defending champion John Higgins in the second round.
The 43-year-old Scot, who finished off Bingham with a break of 96, said: "Everyone wants to be 8-1 up but it's hard to have the same intensity you had at the start of the match. I was pretty flat tonight and I think it showed. But I finished it off well.
"Overall I played really well in the match, topped off by the maximum which I'm delighted about.
"Now it's John and I can't wait, I'm really looking forward to it."