The 2017 Winmau World Masters was a major tournament on the BDO/WDF calendar for 2017. It took place from 25–27 September at the Bridlington Spa Hall, which hosted the stage element of the event for the first time since 2009. The tournament was the last BDO tournament entered by Ratajski as a month after winning the event he accepted an offer to play in the 2018 PDC World Darts Championship and made the full switch to the PDC in January.