Undo latest MyCareer game (PC)

Hi,

Is there any tool available to edit MyCareer played games ?
By mistake I skipped the Rising Stars Challenge, so I just need to undo this game.

Nope. Keep regular backups next time.

Even when REDitor comes out, if it keeps the same features as 2K12 as far as schedule goes, you won't be able to alter the schedule once the season has started.

Where can I find the file format description of MyCareer save file ?
I may wrote a small application to undo latest game.

Well to many changes in the save file between two games to figure out something ...
I give up, no rising stars for me