Rob Lewis from Shropshire.
The Millers record with Rob in charge isn't crash hot, losing at home 3-2 to Wycombe last season with several other drawn games and defeats suffered in previous seasons too.
This season so far Lewis has dished out 45 yellows and 3 red cards in 12 games.
Running the lines tomorrow are Mr. M. Duncan (Cheshire) and Mr. P. Hobday (West Midlands).
The fourth official is Mr. N. Gibbons (Lancashire).