Platt finished second behind Corey Cadby in the 2016 DPA Australian Grand Prix rankings, having led the standings heading into the final two ranking events of the year. He went on to win the Oceanic Masters, defeating New Zealand's Cody Harris in the final, to qualify for the 2017 PDC World Championship. After defeating John Bowles by a score of 2 sets to nil in the preliminary round, Platt lost to Taylor by a score of 3 sets to nil in a rematch of his first-round match in 2006.