Mays Copeland
I build fantasy sports software. Beyond my own projects, I'm available to turn custom spreadsheets and vibe-coded ideas into real technical tools.
I'm an expert at connecting and extracting sports data and fluent in a variety of languages and technologies.
If you want to work together, email me at [email protected].
Current Projects
MVP
2026—present
Elixir (Phoenix)
MVP is my in-progress idea for an in-season companion to DraftKick. A tool that lets you update all your teams in one place.
It's still in the early stages, but I'm excited to see where it goes.
themvp.app →
Whiffs
2025—present
Python
Whiffs is an open-source framework for analyzing MLB player projection accuracy.
It performs advanced MAE and RMSE analysis, weighting errors by playing time to provide deeper insights into model performance.
whiffs.org →
DraftKick
2022—present
JavaScript (Vue)
Powerful and easy-to-use fantasy draft software
DraftKick is my take on the draft assistant. It can handle every kind of league format with the player valuation algorithm I've been honing since 2008.
draftkick.com →
Fantasy Wayback
2020—present
PHP
Fantasy Wayback calculates fantasy values for historical baseball seasons, going back to the start of the fantasy era (1980).
Valuations are made using the LastPlayerPicked Price Guide.
fantasywayback.com →Past Projects
Projectile
2021—2023
Python (Django)
Projectile was a fantasy stats site. It used by player valuation algorithm to build player pages with fantasy values, customized for any league.
I shut it down in 2023 to focus more of my attention on DraftKick.
Open Projections
2021—2023
Python (Flask)
The Open Projections were open source baseball player forecasts.
I dreamed of competing with the proprietary models, but they were still a ways off from that.
source →
@SavesBot
2020—2023
PHP
@SavesBot was a simple Twitter bot that watches the FanGraphs Closer Depth Chart and tweets about changes.
It was an unfortunate victim of the Twitter API changes in 2023.
@SavesBot →Price Guide User Scripts
2009—2013
JavaScript
While the Price Guide was primarily a pre-season tool for draft prep, it could also generate in-season values.
These simple JS scripts would insert in-season dollar values onto your Yahoo, CBS, or ESPN league pages.
LastPlayerPicked
Price Guide
2008—2013
PHP
My first public project was the Price Guide on LastPlayerPicked.com, an online tool that created fantasy salaries for various projections, customized for any league configuration.
I maintained this site for the next five years before publishing the source on GitHub.
source →