Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the highest amount of extra points someone got when they scored 28 points but had 0 field goals?

### Inputs:
table_name: table, columns: ['Player', 'Touchdowns', 'Extra points', 'Field goals', 'Points']

### Response:
SELECT MAX Extra points FROM table WHERE Points = 28 AND Field goals < 0