Chris Mason (born 17 December 1969) is an English former professional darts player. He used the nickname Mace the Ace. BDO and first PDC spell Mason began his career in the British Darts Organisation, making his World Championship debut at the 1996 BDO World Championship. He lost 0–3 to Andy Fordham. After joining the World Darts Council in 1996, Mason competed in the 1996 World Matchplay, losing to Alan Warriner. In October 1996, Mason reached the final of the Sky Sports World Pairs partnered by Steve Raw, where they were narrowly beaten by Phil Taylor and Bob Anderson. Mason then competed in the 1997 WDC World Championship, where he lost 1–3 to Gerald Verrier and 0–3 to Taylor in the group stage. Shortly after the BDO and PDC agreed the Tomlin Order in June 1997, some BDO players participated in the World Matchplay event between 1997 and 2001, and in the World Grand Prix event between 1998 and 2001. Mason went back to playing in the BDO World Championship after the Tomlin Order, but continued to play in other PDC televised majors outside of their World Championship. After a second round defeat in the BDO world championships in 1998, he went on to reach the semi finals of the 1998 World Matchplay, narrowly losing 11–13 to Ronnie Baxter. The following year, Mason reached the quarter finals of the 1999 World Matchplay, losing 11–16 to Taylor. Mason also reached the quarter finals of the World Grand Prix events in 1999 and 2000, losing to Peter Manley and Taylor respectively. Mason enjoyed his best achievement in the 1999 BDO World Championship, when he recovered from 1–4 down in sets in his best-of-nine quarter-final match against Martin Adams, survived many match darts against him before eventually winning 5–4 in sets, winning by 6–4 in legs in the deciding set. This match is regarded as one of the best matches on television, and it included 29 180s between the players; 13 for Mason and 16 for Adams. He lost the semi-final 2–5 to reigning BDO World Champion, Raymond van Barneveld, three of those sets on deciding legs. Mason avenged the defeat to van Barneveld the following year by beating van Barneveld 3–1 in the first round, averaging over 100. Mason also beat Fordham in the quarter-finals before losing 4–5 to Ted Hankey in the semi-finals, after leading 4–2. This match holds the 180 record