Keith Stroud from Hampshire.
This will be the first time Keith has stood in a Millers game this season, and he's not been shy of dishing the cards out.
He's shown a whopping 163 yellows and 7 reds in just 37 matches.
Running the lines are Mr. S. Copeland (Merseyside) and Mr. R. Merchant (Staffordshire).
The fourth official is Mr. M. Brown (East Yorkshire).