Gavin Ward from Surrey.
Ward took charge of the Millers twice last season, the first time being the 3-1 win over Dagenham back in September 2011 at Don Valley.
The second occasion was our first ever visit to Crawley Town, when Steve Evans' former side beat the Millers 3-0 back in March.
Ward likes his cards and this season has produced 73 yellows and 6 reds in just 20 games so far.
Running the lines are Mr. J. Busby (Oxfordshire) and Mr. M. Bull (Essex).
The fourth official is Mr. J. Amey (Dorset).