Table schema:
CREATE TABLE table_name_86 (venue VARCHAR, runner_up VARCHAR, champion__average_in_final_ VARCHAR)

Question: what is the venue when the runner-up is £20,000, the champion (average in final) is phil taylor (109.35)?
SQL: SELECT venue FROM table_name_86 WHERE runner_up = "£20,000" AND champion__average_in_final_ = "phil taylor (109.35)"