So, he borrowed a technique from machine learning: The Algorithm Behind the Art Chen began scraping consensus rankings from the industry’s most accurate experts (sources like FantasyPros, ESPN, and Rotoworld). Instead of averaging their numbers, he applied a clustering algorithm—similar to how Netflix groups similar movies or how biologists classify species—to group players who were statistically indistinguishable from one another.
But the raw data was ugly. Chen, who moonlights as a design enthusiast (he has cited Piet Mondrian’s grid-based abstract art as an influence), decided to publish the results on a simple GitHub page. He used a clean, color-coded CSS grid. Red for Tier 1. Orange for Tier 2. Yellow for Tier 3.
The internet exploded. By 2015, the "Boris Chen tiers" were no longer a secret. Reddit’s r/fantasyfootball worshipped him as a demigod. Twitter analysts debated his methodology. Even casual players began screenshotting his grids and sharing them in group chats.