[2] Cox was called up to make his first-class debut, aged 17, in Worcestershire's penultimate County Championship match of 2009, against Somerset at Taunton.

He scored 61 in his only innings of a drawn match (sharing a century partnership with Daryl Mitchell, who scored 298); keeping wicket, his first first-class dismissal was that of Marcus Trescothick, stumped off the bowling of Moeen Ali for 72.

In that season he scored his first first-class century (against Essex) and was described by former-England wicket-keeper James Foster as "...one of the best young keepers I have ever seen.

[8] In December 2018, he signed with Otago cricket team to play in the 2018–19 Super Smash T20 tournament in New Zealand.

[9] In The 2021 Vitality Blast Campaign, Ben Cox was appointed captain for the competition due to the absence of Moeen Ali.