Millwall FC and Wigan Athletic will be in League One next season.
Both sides needed Rotherham United not to get a result from their home game against Reading tonight.
However, in the 52nd minute, Matt Derbyshire gave the Millers the lead and five minutes later, Lee Frecklington scored a second, again set up by former City loanee Danny Ward.
Former Coventry City loanee Oliver Norwood scored with a stunning twenty five yarder in the 87th minute but Reading could not get a second goal and Rotherham won 2-1 to send Millwall and Wigan into League One.