user: Question: Who is the player from round 13 that plays Center?
Columns: ['Player', 'Round', 'Pick', 'Position', 'NFL Club']
Types: ['text', 'real', 'real', 'text', 'text']
Sample row: ['Bobby Watkins', 2.0, 23.0, 'Halfback', 'Chicago Bears']
SQL:

assistant: SELECT "Player" FROM "Table" WHERE "Round" = 13.0 AND "Position" = 'Center';