The Millers have only won one of their last five home league games against Watford (D3 L1).
The Hornets have scored exactly once in six of their last seven against Rotherham United.
Joel Ekstrand was sent off after 3 minutes v Norwich. The fastest red card in the Championship last season came after 9 minutes.
Watford have won just one of their last 18 away matches in the Championship, drawing nine (L8).
Watford have afforded their opponents 46 attempts at goal this season, eight more than any other side.
Only Andy Reid (10) has created more chances this season than Ben Pringle (9).