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

### Instruction:
What is the average rank for team cle when the BB/SO is 10.89?

### Inputs:
table_name: table, columns: ['Rank', 'Player', 'Team', 'Year', 'BB/SO']

### Response:
SELECT AVG Rank FROM table WHERE Team = cle AND BB/SO = 10.89