sentences:  Eric Bristow achieved the feat three times (1979 Masters 1980 World, 1983–84 and 1984–85).Bob Anderson (1987–88), Richie Burnett (1994–95), John Walton (2000–01), Martin Adams (2009–10 and 2010–11), Stephen Bunting (2013–14) and Glen Durrant (2016–17) were the others.There have been two other instances of players holding both championships at the same time (Phil Taylor 1990 and Raymond van Barneveld 2005) - but these were not during the same season which is considered to end with the World Championship.