user: Question: What is the coefficient for Agustín Marchesín (1)?
Columns: ['Tournament', 'Player', 'Nationality', 'Team', 'Games played', 'Goals conceded', 'Coefficient']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'text']
Sample row: ['2008 Apertura', 'Gastón Sessa (1)', 'Argentine', 'Gimnasia (La Plata) (1)', 17.0, 14.0, '0.82']
SQL:

assistant: SELECT "Coefficient" FROM "Table" WHERE "Player" = 'Agustín Marchesín (1)';