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

### Instruction:
What were the Runners-up prior to 1990 when Ivan Lendl was Champion in the Seiko Super Tennis Tournament?

### Inputs:
table_name: table, columns: ['Year', 'Name of Tournament', 'Champions', 'Runners-up', 'Score']

### Response:
SELECT Runners-up FROM table WHERE Champions = ivan lendl AND Name of Tournament = seiko super tennis AND Year < 1990