Hain began his cricketing journey in Australia, where he moved at a young age, and played junior cricket before moving to England. He represents Warwickshire in county cricket and has been a standout performer for the club across formats. Known for his composed and technically sound batting, Hain has amassed significant runs in the County Championship, One Day Cup, and T20 Blast. His performances have led to calls for his inclusion in the England national team, particularly in the white-ball formats, where his ability to pace an innings and finish games has been impressive.