The Problem with Custom OOTP Schedules
If you play Out of the Park Baseball (OOTP), you know half the fun is creating custom or fictional leagues. Whether you are running an expanded 32-team Major League setup, a single-subleague 12-team classic, or an intricate multi-division alignment, getting the schedule just right is often where the dream hits a wall.
OOTP relies on .lsdl (XML-based) schedule files. While the community has shared incredible schedule packs over the years, finding an existing schedule that perfectly matches your specific combination of teams, division counts, start dates, All-Star Game placement, and interleague preferences can feel like searching for a needle in a haystack.
And if you’ve ever tried hand-editing a raw .lsdl file or manually balancing game counts across divisional and non-divisional opponents… you know how tedious and error-prone it can be. One missing XML tag or broken game count math, and OOTP rejects the file or produces broken fixtures.
I decided to solve this for my own leagues—and for the community—by building the OOTP Custom Schedule Generator.
What is the OOTP Custom Schedule Generator?
What started as a local Python script to handle the breakdown math has grown into a full web application hosted at ootpschedules.com.
The goal is simple: enter your league’s parameters, preview the breakdown matrix directly in your browser, and download a fully formatted, valid .lsdl file ready to drop into your OOTP schedule directory.
Key Features
- Flexible League Structure: Support for varying numbers of subleagues, divisions per subleague, and teams per division.
- Balanced & Unbalanced Options: Choose between balanced scheduling or weighted divisional rivalries, complete with toggles for interleague play.
- Calendar & Break Control: Set your exact start month, target start date, and preferred weekday. You can also configure the target day and weekday for the All-Star Game, complete with customizable days-off buffers before and after the break.
- Smart Game Breakdown Engine: The backend handles the math to find valid distribution combinations for divisional, subleague, and interleague game splits based on your total games target.
- In-Browser Schedule Preview: Before downloading anything, you can preview the generated schedule matrix directly in the browser to verify how series and match-ups line up.
- One-Click
.lsdlExport: Generates clean, properly structured XML files formatted specifically to OOTP specifications.
Under the Hood
Under the hood, the generator is built with a Python backend that handles the scheduling algorithms, game distribution logic, and XML node structure generation. The web frontend provides a responsive interface—featuring clean light/dark modes—and renders interactive schedule previews before generating the final download.
I’ve recently updated the generator engine to refine interleague scheduling rules, optimize All-Star Game XML tag generation, and add direct browser previews so you know exactly what your schedule looks like before importing it into your save.
Try It Out & Get Involved
The app is free to use for anyone in the OOTP community:
- 🌐 Live Web App: ootpschedules.com
- 📦 GitHub Repository: matthewrstreeter/OOTPScheduleGenerator
If you’re an OOTP player, give it a try for your next custom league or expansion project! If you’re a fellow developer or schedule builder, feel free to check out the code on GitHub, report any bugs, or open a pull request. Feedback and suggestions for new schedule structures are always welcome.
Disclaimer: OOTP Custom Schedule Generator is an independent community project and is not affiliated with or endorsed by Out of the Park Developments.