Table: tennis_finals_6
Columns: outcome
date
tournament
partner
opponents_in_the_final

Question: What date shows corrado barazzutti's partner?
SQL: SELECT "date" FROM tennis_finals_6 WHERE "partner" = 'corrado barazzutti'

Question: Which date has the tom gullikson butch walts final, and who was the runner-up?
SQL: SELECT "date" FROM tennis_finals_6 WHERE "outcome" = 'runner-up' AND "opponents_in_the_final" = 'tom gullikson butch walts'