Question: What is the completion percentage when yards per attempt was done by Steve McNair : 2003?
SQL: SELECT "Completion Percentage" FROM "1-19517448-3" WHERE "Yards Per Attempt" = 'Steve McNair : 2003';

Question: What rank has a rating of 146.8? 
SQL: SELECT "Rank" FROM "1-19517448-3" WHERE "Rating" = '146.8';

Question: How many yards per attempt were there when total yards were 513?
SQL: SELECT "Yards Per Attempt" FROM "1-19517448-3" WHERE "Total Yards" = '513';