user: Question: What was the margin of victory over Justin Leonard, Phillip Price?
Columns: ['Year', 'Championship', '54 holes', 'Winning score', 'Margin of victory', 'Runner(s)-up']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1999.0, 'WGC-NEC Invitational', '5 shot lead', '–10 (66-71-62-71=270)', '1 stroke', 'Phil Mickelson']
SQL:

assistant: SELECT "Margin of victory" FROM "Table" WHERE "Runner(s)-up" = 'Justin Leonard, Phillip Price';