Question:  what's the margin where runner(s)-up is Phil Mickelson
SQL: SELECT "Margin" FROM "1-11570261-1" WHERE "Runner(s)-up" = 'Phil Mickelson';

Question:  who is the runner(s)-up where 54 holes is Tied for lead and margin is 5 strokes
SQL: SELECT "Runner(s)-up" FROM "1-11570261-1" WHERE "54 holes" = 'Tied for lead' AND "Margin" = '5 strokes';

Question:  what's the championship where 54 holes is 1 shot lead and runner(s)-up is Chris DiMarco
SQL: SELECT "Championship" FROM "1-11570261-1" WHERE "54 holes" = '1 shot lead' AND "Runner(s)-up" = 'Chris DiMarco';

Question: what is the minimum year where winning score is −8 (71-63-69-69=272)
SQL: SELECT MIN("Year") FROM "1-11570261-1" WHERE "Winning score" = '−8 (71-63-69-69=272)';

Question:  what's the championship where winning score is −12 (74-66-65-71=276)
SQL: SELECT "Championship" FROM "1-11570261-1" WHERE "Winning score" = '−12 (74-66-65-71=276)';

Question:  what's the 54 holes where winning score is −19 (67-66-67-69=269)
SQL: SELECT "54 holes" FROM "1-11570261-1" WHERE "Winning score" = '−19 (67-66-67-69=269)';