Bill Radjewski
@collegefootballdata
CFB and CBB graphs and analytics | CollegeFootballData.com | CollegeBasketballData.com | It's pronounced "ruh-jess-key"
Start preseason analysis without beginning from a blank notebook. The 2026 CFB Starter Pack pairs clean historical data with 14 guided notebooks. The new weekly trajectory notebook helps track how a team’s form changes across the season. collegefootballdata.gumroad.com/l/starter-pack
Coach seasons now connect to conference, ratings, FPI, recruiting, talent, polls, postseason, and draft context. Record and scoring splits use reviewed assignment boundaries, so midseason changes are attributed to the right coach.
Three focused API endpoints are now live: /coaches/profile - identity and career summary /coaches/seasons - detailed records and team context /coaches/tenures - each coaching stint, including interim roles and returns
Coach data in CFBD just got a major upgrade. Build with stable coach and team IDs, career summaries, complete tenure histories, and richer season-level context.
I built the CFBD AI Builder Pack for people who understand API basics and want tested project structure for work with Claude, Codex, Cursor, Copilot, or similar tools. See inside the pack: youtu.be/ook9dPzb3yQ Gumroad link: gumroad.com/products/hbh...
AI tools can help with CFBD code but you still need to understand the underlying API request. This AI API Launchpad walkthrough gives a preview of what is included in the pack: buff.ly/3CyzYHL
New for Tier 2+ Patreon subscribers: My Season Workbench is live on CollegeFootballData.com. Favorite teams, saved workflows, recent exports, API usage, and season shortcuts now in one dashboard for CFB data work. Workbench URL: buff.ly/wAD3yDC
🎆 CFB is back next month. The 2026 CFBD Starter Pack includes: ✅ Data through 2025 + 2026 schedule ✅ 14 guided Jupyter notebooks ✅ Step-by-step model building A great July 4th weekend project. 🔗 buff.ly/M4pMbG8
Want to build your own college football rankings but don't know where to start? The 2026 CFB Starter Pack gives you clean, structured data + 14 guided notebooks: rankings, matchup prediction, team similarity, EPA & more. Your on-ramp → buff.ly/mzK6vQW
Which 2025 offenses lived on big plays? Wake Forest & Missouri State: super explosive, but below-median success rate. Boom or bust. Notre Dame & Vanderbilt? Explosive AND efficient. From the Compare Metrics notebook in the 2026 Starter Pack: buff.ly/mzK6vQW
New this year: • Full 2025 season across every tier • The 2026 schedule, ready for matchup planning • A new Weekly Team Trajectory notebook — week-by-week form, late-season surges, volatility • Improvements across every existing notebook
14 notebooks take you from "what's in this file" to real analysis: • team rankings • opponent-adjusted ratings (SRS-style) • matchup prediction • team similarity • drive efficiency dashboards • metric distributions Each one explains the idea before the code.
There’s a clear exponential curve between roster talent and NFL Draft picks. Good teams produce draft picks. Elite teams flood the draft.
Updated historical Elo chart for the newly crowned men's basketball National Champion, Michigan. Greatest Michigan team of all time? They have a strong argument.
Season Elo Trends - National Title Game Edition Michigan has hovered near the top of Elo most of the year. UConn has consistently graded out as an elite team. Strong vs steady with it all on the line tonight.
Offense gets headlines. Defense wins in March. The Final Four teams? They do both and that’s why they’re still standing. More data: CollegeBasketballData.com
Shot distribution contrast in the Final Four: • Illinois: extreme 3PT reliance (50%) • Arizona: highest mid-range rate (32%) • Michigan: near-even rim/3 split • UConn: efficient modern profile Philosophy clash this weekend.
Seed Says Chalk. Elo Says Elite. With two 1-seeds, a 2-seed, and a 3-seed, this was already one of the chalkiest Final Fours of the seeding era. But by pre-tournament Elo, it was even stronger than that seed profile might suggest.
The Sweet 16 breaks into tiers: 🏆 Championship DNA: Duke, Michigan, Arizona ⚠️ Dangerous but flawed: Alabama, Purdue, Illinois 🧊 Defense travels: Nebraska, Houston Balance still wins in March… usually. Who survives this weekend?
Sweet 16 advanced stats breakdown 👀 • Illinois: most efficient offense remaining (131.6) • Duke: best defense left (94.4) • Michigan: elite two-way profile (123 Off / 98 Def) • Iowa State: defense + turnover pressure combo Who cuts down the nets?
Just launched a new Team Leaderboard endpoint + Shooting Profile Explorer 📊 It combines: • Team stats • Shooting splits • Adjusted ratings → All in a single call You can also compare teams side-by-side (great for March Madness matchups) Available now for $5 tier subscribers: buff.ly/CEz2IKF
South Region offensive + defensive breakdown 👀 • Illinois: most efficient offense in the region (131.6) • Houston: elite defense (#1 in region, 96.6) • Florida: strong two-way profile (121 Off / 100 Def) • Vanderbilt: explosive offense but defensive concerns Who comes out of the South?
Midwest Region offensive + defensive breakdown 👀 • Miami (OH): most efficient offense in the region (133.5) • Iowa State: best defense (96.1) and strong two-way profile • Michigan: top seed with elite defensive efficiency • Saint Louis: strong offense + #2 defense Who comes out of the Midwest?
🏀 Where do March Madness upsets happen most often? Historically: the Elite Eight. This chart comes from the datasets in the March Madness Pack. Clean tournament data + Jupyter notebooks for bracket modeling. $25 🔗 buff.ly/7stmFQL
West Region offensive + defensive breakdown 👀 • Purdue: most efficient offense in the region (126.5) • Gonzaga: elite defense (#1 in region, 93.8) • Arizona: strong two-way profile (120 Off / 96 Def) • High Point: potential upset choice? Which team here has the best shot to win the region?
East Region offensive + defensive breakdown 👀 • Duke: elite on both ends (123 Off / 94 Def) • UConn: slow pace but efficient • Northern Iowa: top-tier defense • Kansas: solid on defense but struggling offensively Which team here is the biggest threat to Duke?
Continuing the CBB Elo series with a look at Duke. Really puts into perspective how impressive Coach K's tenure was.
What does 75+ years of Michigan basketball look like in one chart? Now you can find out. Historical Elo ratings (1949–present) are officially live on CollegeBasketballData.com. Every game. Every season. Fully queryable via API. Michigan first 👇 Next up?
Coming soon: Elo ratings for college basketball. 🏀📈 1950→ present. Every team. Every game.