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

### Instruction:
In 1994 what tournament held a ATP masters series

### Inputs:
table_name: table, columns: ['Tournament', '1990', '1991', '1992', '1993', '1994', '1995', '1996', '1997', '1998', 'Career SR']

### Response:
SELECT 1994 FROM table WHERE Tournament = atp masters series