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

### Instruction:
What is the Win % in the Span of 2011–2013 with a Lost of less than 1?

### Inputs:
table_name: table, columns: ['Opposition', 'Span', 'Lost', 'Tied', 'Win %']

### Response:
SELECT AVG Win % FROM table WHERE Span = 2011–2013 AND Lost < 1