Table: golfer_stats_6
Columns: date
tournament
winning_score
margin_of_victory
runner_s_up

Question: Which Runner(s)-up has a Margin of victory of 1 stroke, and a Tournament of world seniors invitational?
SQL: SELECT "runner_s_up" FROM golfer_stats_6 WHERE "margin_of_victory" = '1 stroke' AND "tournament" = 'world seniors invitational'

Question: Which Date has a Margin of victory of 4 strokes?
SQL: SELECT "date" FROM golfer_stats_6 WHERE "margin_of_victory" = '4 strokes'

Question: Which Runner(s)-up has a Tournament of general foods pga seniors' championship?
SQL: SELECT "runner_s_up" FROM golfer_stats_6 WHERE "tournament" = 'general foods pga seniors'' championship'

Question: Which Tournament has a Margin of victory of 2 strokes, and a Winning score of −14 (68-66-68=202)?
SQL: SELECT "tournament" FROM golfer_stats_6 WHERE "margin_of_victory" = '2 strokes' AND "winning_score" = '−14 (68-66-68=202)'

Question: Which Date has a Winning score of −9 (70-64-70=203)?
SQL: SELECT "date" FROM golfer_stats_6 WHERE "winning_score" = '−9 (70-64-70=203)'