Monday morning will be a grim place at work for Rotherham fans following Saturday's 3-2 defeat to Sheffield Wednesday.
Aside from the local rivalry element, the loss was also particularly damaging to the Millers' quest for survival in the Sky Bet Championship.
Here is a numerical analysis of the match.
-20 - The number the Millers' goal difference currently stands on, worse than Wigan's and those immediately above them in the table.
1.54 - The number of goals on average the Millers have conceded per game this season after shipping another three against Wednesday.
2 - The number of times the Millers have now scored first and lost a game in the Championship, the first being at Bolton back in September.
3 - The number of wins the Millers have recorded on a Saturday in front of their own fans this season after another dismal weekend.
3 - The number of changes boss Steve Evans made to his side for the derby clash, handing debuts to Emi Martinez and Lawrie Wilson while also recalling skipper Craig Morgan.
3 - The number of defeats in a row the Millers have now recorded after Wednesday's late show, the first time that has happened this season.
3 - The number of league defeats in a row following this loss, the first time that has ever happened in Rotherham's short stay at the New York Stadium.
5 - The number of points separating the Millers with 22nd-placed Wigan in the table after late turnarounds in both sides' games stopped it being nine.
5 - The number of times the Millers have conceded three goals at home in the league, a record only worsened by Millwall.
8 - The number of home defeats the Millers have fallen to this season after the Owls' win, equalling the tally in the 2012/13 season.
9 - The number of shots on goal the Millers recorded during the 90 (plus) minutes at New York, with four being on target, the two goals and the two fine saves from Keiren Westwood.
10 - The number of minutes after Jordan Bowery's 87th-minute goal that the Millers had to see out to claim a precious victory.
12 - The number of minutes which saw four goals go in at New York, three of them to Wednesday, ensuring a frantic climax to the game.
14 - The number of goals the Millers have conceded between minutes 80 and 90+ in games this season, easily their most vulnerable period of games.
14 - The number of points the Millers have dropped by conceding goals in between minutes 80 and 90+ this season.
15 - The number of shots Sheffield Wednesday peppered at the Millers' goal with six of them going on target.
26 - The number of second-half goals the Millers have scored this season after adding another two to their tally against Wednesday.
29 - The number of Championship games where the Millers have failed to score in the first half this season.
31 - The number of debuts boss Evans has handed to players this season after Martinez and Wilson were handed starts.
39 - The number of years that Wednesday remain unbeaten in the league at the Millers following this win, a run going back to 1976.
45 - The number of different players the Millers have named in their matchday squads this season, only worsened by Blackpool and Wigan.
56 - The number of shots Matt Derbyshire has had this season after another three on Saturday, resulting in just five league goals.
347 - The number of minutes between Jordan Bowery's 87th-minute goal and his previous effort against Blackpool, a run of 13 games and four months.
