Table: jack_nicklaus_achievements_2
Columns: date
tournament
winning_score
margin_of_victory
runner_s_up

Question: What races were Chi-Chi Rodriguez the runner-up in?
SQL: SELECT "tournament" FROM jack_nicklaus_achievements_2 WHERE "runner_s_up" = 'chi-chi rodriguez'

Question: What was the margin of victory for Isao Aoki when he was a runner-up?
SQL: SELECT "margin_of_victory" FROM jack_nicklaus_achievements_2 WHERE "runner_s_up" = 'isao aoki'

Question: What was the winning score in the mazda senior tournament players championship?
SQL: SELECT "winning_score" FROM jack_nicklaus_achievements_2 WHERE "tournament" = 'mazda senior tournament players championship'

Question: Which tournament ended with a winning score of –27 (65-68-64-64=261)?
SQL: SELECT "tournament" FROM jack_nicklaus_achievements_2 WHERE "winning_score" = '–27 (65-68-64-64=261)'

Question: Who was the runner(s)-up for the Feb 18, 1996 tournament?
SQL: SELECT "runner_s_up" FROM jack_nicklaus_achievements_2 WHERE "date" = 'feb 18, 1996'