Table: atp_champions_tour_matches
Columns: tournament
winner
runner_up
score
third_place

Question: Which Tournament has Pat Cash as a runner-up?
SQL: SELECT "tournament" FROM atp_champions_tour_matches WHERE "runner_up" = 'pat cash'

Question: Who is the winner for the Tournament in Hong Kong with a third place winner named Mikael Pernfors?
SQL: SELECT "winner" FROM atp_champions_tour_matches WHERE "third_place" = 'mikael pernfors' AND "tournament" = 'hong kong'