Billy Crystal has signed on to coach his favourite coach as New York Yankees boss JOE TORRE prepares to make his animated movie debut.

Torre will lend his voice to upcoming baseball movie YANKEE IRVING, which was the film late SUPERMAN star Christopher Reeve was working on before his death last year (04), and he's asked pal Crystal for voice coaching lessons.

The film will also features the voices of Whoopi Goldberg and William H Macy.