What was the minimum score for r2?
{'header': ['Player', 'Country', 'Year(s) won', 'R1', 'R2', 'R3', 'R4', 'Total', 'To par', 'Finish'], 'page_title': '2009 Masters Tournament', 'page_id': '', 'types': ['text', 'text', 'text', 'real', 'real', 'real', 'real', 'real', 'text', 'text'], 'id': '1-18812411-3', 'section_title': 'Made the cut', 'caption': 'Made the cut', 'rows': [['Phil Mickelson', 'United States', '2004 , 2006', '73', '68', '71', '67', '279', '–9', '5'], ['Tiger Woods', 'United States', '1997 , 2001 , 2002 , 2005', '70', '72', '70', '68', '280', '–8', 'T6'], ['Trevor Immelman', 'South Africa', '2008', '71', '74', '72', '69', '286', '–2', 'T20'], ['Sandy Lyle', 'Scotland', '1988', '72', '70', '73', '71', '286', '–2', 'T20'], ['Larry Mize', 'United States', '1987', '67', '76', '72', '72', '287', '–1', 'T30'], ['Vijay Singh', 'Fiji', '2000', '71', '70', '72', '74', '287', '–1', 'T30']], 'name': 'table_18812411_3'}