Since the Custom League Designer is now part of the Nostalgia Sim Baseball experience, I want to offer a more detailed explanation of the concept.

Over the years many potential users of our product have asked whether they could sim games themselves. Up until now the answer has always been no. We designed NSB to simulate games on the main sim engine rather than on the local PC. Technically, it remains impossible to simulate games or seasons on your local machine. However, the league designer allows you create a league with teams of your own choice, set a few parameters, and track the league's progress from opening day to the championship, just as in our standard leagues.

Here is some information you may find useful:

1. In order to compensate for the abbreviated schedules of older teams, we allow you to set the RPL (real play level) wherever you want it. For example, if you are playing the 1906 Cubs in your league, you'll want to set the RPL at 130 or so in order to prevent fatigue from becoming a factor and "even the playing field" against modern teams.

2. You choose whether you want to allow injuries or not in your league. We recommend that you not allow injuries if you are interested in the highest level of sim accuracy.

3. Rosters are limited to 22 batters and 18 pitchers. Often the actual number of players used on historical teams will exceed these minimums, so naturally we had to make some choices about who gets on the team. When your league is created, batters are sorted in descending order by the number of plate appearances so that those at the bottom can be eliminated as needed. The same is true for pitchers. Additionally, no batter with fewer than 10 plate appearances can make it onto the roster.

4. You can also select the density of play for your league (from once per week to every day) and the number of calendar days to run off the schedule in each event. The fastest possible league simulation currently stands at 21 days. This may be too slow for some users. Please feel free to provide feedback to us.

5. To submit a request for a custom league, you must have a valid license (available for $29.95 lifetime purchase).

6. Every AL/NL team from 1893 - 2008 is eligible for simulation.

7. You must select one team in the league that you want to operate. You do not have to actually operate the team, but in order to install the league in your owner's software it will be necessary to select a team. If you send changes for that team, they are processed in the same manner as our standard leagues. If you decide not to send changes, rotations and lineups will be handled automatically by the sim.

Please let us know at This e-mail address is being protected from spambots. You need JavaScript enabled to view it if you have ideas for enhancing the custom league concept.