REF WATCH: A red card for Sam Hird and penalties galore

On Saturday Chesterfield have their second meeting in just over under months with referee Richard Clark.
Rotherham United v Birmingham City.
Manager Neil Warnock has words with referee Richard Clark at full time.
13th Febuary 2016.
Picture : Jonathan GawthorpeRotherham United v Birmingham City.
Manager Neil Warnock has words with referee Richard Clark at full time.
13th Febuary 2016.
Picture : Jonathan Gawthorpe
Rotherham United v Birmingham City. Manager Neil Warnock has words with referee Richard Clark at full time. 13th Febuary 2016. Picture : Jonathan Gawthorpe

Clark takes charge of the Spireites’ encounter with Port Vale, having last met Town when they played at Northampton Town in February.