Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_88 ( margin VARCHAR, year VARCHAR, runner_s__up VARCHAR )

### Question ###
What margin was in after 1981, and was Roberto De Vicenzo runner-up?

### Accurate SQL ###

SELECT margin FROM table_name_88 WHERE year > 1981 AND runner_s__up = "roberto de vicenzo"