Championship: Doing the Double
The following list shows the number of times each club in the Championship won home and away against one of their rivals during the 2012/2013 Championship season. Every single one of the 24 clubs managed to achieve this feat against at least one of their opponents during the season.
- Cardiff City: Millwall, Blackburn Rovers, Leeds United, Blackpool, Birmingham City, Wolves and Sheffield Wednesday.
- Hull City: Millwall, Derby County, Huddersfield Town, Ipswich Town, Leeds United and Birmingham City.
- Watford: Huddersfield Town, Leicester City, Birmingham City, Sheffield Wednesday and Nottingham Forest.
- Birmingham City: Bristol City, Peterborough United, Leeds United and Middlesbrough.
- Crystal Palace: Peterborough United, Derby County, Wolves and Charlton Athletic.
- Leicester City: Bristol City, Huddersfield Town, Burnley and Middlesbrough.
- Nottingham Forest: Peterborough United, Wolves, Sheffield Wednesday and Charlton Athletic.
- Burnley: Bristol City, Derby County and Wolves.
- Charlton Athletic: Bristol City, Blackpool and Leicester City.
- Huddersfield Town: Bristol City, Burnley and Wolves.
- Sheffield Wednesday: Millwall, Barnsley and Charlton Athletic.
- Barnsley: Millwall and Middlesbrough.
- Blackburn Rovers: Bristol City and Barnsley.
- Bolton Wanderers: Bristol City and Blackburn Rovers.
- Brighton & Hove Albion: Huddersfield Town and Burnley.
- Bristol City: Peterborough United and Middlesbrough.
- Derby County: Bristol City and Leeds United.
- Ipswich Town: Birmingham City and Bolton Wanderers.
- Millwall: Leicester City and Middlesbrough.
- Peterborough United: Barnsley and Cardiff City.
- Wolves: Bristol City and Birmingham City.
- Blackpool: Millwall.
- Leeds United: Bristol City.
- Middlesbrough: Blackburn Rovers.
- No side did the double over promoted Hull City or play-off finalists Crystal Palace and Watford.
- Cardiff did the double over seven other sides but relegated Peterborough were the only side to do the double over the Dragons.
- Ten sides did the double against Bristol City which may explain why the club finished bottom.
- The three sides who did the double against only one other club finished in 13th (Leeds United), 15th (Blackpool) and 16th (Middlesbrough)