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Ten-man Charlton remain in the Championship relegation zone after a 3-0 defeat at fellow strugglers Doncaster on Tuesday night.
Addicks were already a goal down following Abdoulaye Meite's 26th-minute strike when Lawrie Wilson was sent off for bringing down Billy Sharp in the box.
Chris Brown sent keeper Ben Alnwick the wrong way from the spot to double Rovers' lead on 36 minutes.
Doncaster controlled the game with the extra man and made sure of the points when Mark Duffy curled an effort past Alnwick from just inside the area after 67 minutes.
Defeat would have been heavier without Alnwick's saves from Sharp and James Coppinger, while substitute Alex Peterson hit the bar.
Charlton dropped into the bottom of three while in FA Cup action at Huddersfield on Saturday and are two points adrift of safety after rivals Millwall drew with Sheffield Wednesday.