sentences:  In the 2007 World Championships, held at the Lakeside, De Ruiter made an excellent run by reaching the semi-finals, narrowly losing 6-4 in sets to the late Phill Nixon who would later finish runner-up to eventual champion Martin Adams.In the 2008 World Championships, De Ruiter was eliminated in the first round, losing to Englishman Glenn Moody.De Ruiter played very few tournaments during early stages of 2008 due to vertigo and quit darts for three months until he came back to the game.