With figures gathered from Transfermarkt, here's a look at how both club's average home support over the last decade...
5. 2011/12 - Sheffield Wednesday
Division: League One. Average home attendance: 21,366. (Photo by Clive Brunskill/Getty Images) Photo: Clive Brunskill
6. 2011/12 - Sheffield United
Division: League One. Average home attendance: 18,702. (Photo by Laurence Griffiths/Getty Images) Photo: Laurence Griffiths
7. 2012/13 - Sheffield United
Division: League One. Average home attendance: 18,612. (Photo by Richard Heathcote/Getty Images) Photo: Richard Heathcote
8. 2012/13 - Sheffield Wednesday
Division: Championship. Average home attendance: 24,078. (Photo by Jamie McDonald/Getty Images) Photo: Jamie McDonald