For those who are interested, there's a developer over at Greydog Software named Derek who is extremely interested in working on a boxing sim.
In fact, he reached out to OOTP recently to discuss helping get Title Bout to it's desired state. Unfortunately, they never responded to him. If they decide not to include him to get Title Bout done, he may need to start a new game from scratch - but it seems he's actually already got started and would be open to input from those in this community.
You can find the thread where this was discussed here:
http://www.greydogsoftware.com/forum...d.php?t=546978