user: Question: What was the highest Guard picked?
Columns: ['Pick', 'Round', 'Player', 'Position', 'School']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, '1', 'Bo Jackson', 'Running Back', 'Auburn']
SQL:

assistant: SELECT MAX("Pick") FROM "Table" WHERE "Position" = 'Guard';