Trump in the World Championships earlier this year (Getty Images)
Image credit: Getty Images
This is the fourth ranking title of 24-year-old Trump's career, and the first since the 2012 International Championship in China - when he also beat Robertson in the final.
Trump dominated after an evenly-split first six frames, taking the last two frames of the afternoon session, then moving 6-3 ahead in the first frame of the concluding session.
He secured frame 10 in three scoring turns at the table, and went on to score 101, his eighth century of the tournament, to lead 8-3.
Robertson hit back in frame 12 and won the next with a break of 109, closing to 8-5 and giving himself a glimmer of hope, but Trump wrapped it up.
The native player accepted defeat in an amusing manner, by throwing in an actual towel over a poised Trump before the Bristolian could sink a simple pink to confirm the crucial frame.
For the second year in a row Robertson was beaten into second place, having lost in the final to Marco Fu last time round, but nonetheless has regained the world number one ranking from Mark Selby.