Preston 1-0 Tranmere
Jeffrey Monakana's strike was enough for Preston to defeat Tranmere and end Rovers' slim play-off hopes.
Despite bossing the opening stages, North End almost fell behind when Mamady Sidibe forced a fine save from Norwich loanee Declan Rudd.
But Monakana put the hosts ahead when he rifled home after Will Hayhurst's effort was cleared off the line.
The midfielder almost doubled his tally after the break, but his shot flew just over as the hosts eased to victory.
The result meant Tranmere are now eight points adrift of the play-off places and will remain in League One next season, despite heading the table in February.
Meanwhile, Preston remained still unbeaten at Deepdale since manager Simon Grayson replaced Graham Westley in mid-February.