The two sides, who are competing at opposite ends of the Championship, meet on Saturday.
Carlos Carvalhal has admitted that he is wary of the threat that Rotherham will pose when they travel to Hillsborough on Saturday, but insisted that he was confident that Sheffield Wednesday would come out of the Yorkshire derby with a positive result, the Sheffield Star reports.
The two sides may be competing at opposite ends of the table, but the Millers have received a major boost in the build-up to the game, having picked up their first win under new manager Neil Warnock in their most recent encounter. Nevertheless, Carvalhal hinted that his side should still be considered favourites.
"It will be two teams in different circumstances, one team is fighting to not be relegated and another team is in a good position in this moment," he told the Star.
"In the derby, it is a different environment. It is 90 minutes where we are sure we must fight and run a lot and play good football to beat Rotherham.
"Rotherham are playing better now with a new coach, but at the same time, we are playing at home and we are sure everybody can do their best to feel the power of Hillsborough."
As well as because of the lift that Rotherham would have gained from the 2-1 win over Brentford, the match is perhaps more finely-poised than their respective league positions would suggest.
Wednesday have not won in their last three games, and Birmingham's win against Hull on Thursday means that the Owls are now just one point clear of the Blues, who are leading the chasing pack that sit outside the top six.
Nevertheless, while Carvalhal's men have not won in their last three, they put in a very impressive performance in their most recent game, which was a goalless draw with Hull, and have not lost on their own ground since August so will have plenty of confidence of their own that they will be able to get back to winning ways.