user: Question: What is the highest pick of the Back player from round 28?
Columns: ['Round', 'Pick', 'Player', 'Position', 'School/Club Team']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 2.0, 'Art Hunter', 'Offensive Tackle', 'Notre Dame']
SQL:

assistant: SELECT MAX("Pick") FROM "Table" WHERE "Position" = 'Back' AND "Round" = 28.0;