user: Question: What is the highest Round that has a Position of Tackle and the Player Fred Neilsen?
Columns: ['Round', 'Pick', 'Player', 'Position', 'School/Club Team']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 11.0, 'Walt Schlinkman', 'Fullback', 'Texas Tech']
SQL:

assistant: SELECT MAX("Round") FROM "Table" WHERE "Position" = 'Tackle' AND "Player" = 'Fred Neilsen';