Blog and learning

Fantasy football · 2026-08-17

Fantasy Rankings Update (Aug 17): Our Model’s Risers and Fallers

Which NFL players our projection model has climbing the board this preseason, who it is cooling on, and how to read the live /fantasy/nfl/rankings page.

NFL Data · 2026-08-17

NFL Divisional Games ATS, 1999–2025

Divisional underdogs went 1,359-1,252-74 ATS from 1999–2025. Road dogs led the split; spread buckets stayed close to 52%.

NFL Data · 2026-08-17

How Often NFL Favorites Covered, 1999–2025

NFL favorites covered 48.9% of graded decisions from 1999–2025. See every season, every push, and why one hot year proves little.

NFL Data · 2026-08-17

NFL Home-Field Edge by Season at the Closing Line

The average closing home spread fell from 2.50 points in 1999–2008 to 1.58 in 2019–2025. See the season ledger and its limits.

NFL Data · 2026-08-17

How Much Do NFL Lines Move? This Snapshot Cannot Say

The NFL snapshot has 7,548 games and closing spreads, but zero opening-line fields. Here is what can be measured and what remains unavailable.

NFL Data · 2026-08-17

NFL Overs vs. Unders by Month, 1999–2025

October led the long-run over rate at 51.1%; November was lowest at 48.4%. See monthly records, recent splits, and counting rules.

NFL Betting · 2026-08-17

Preseason Primer: How to Read an NFL Betting Record

Read W-L-P, sample, market, date window, and closing-line source before a percentage. This primer uses the 7,548-row NFL snapshot.

NFL Data · 2026-08-17

NFL Road Underdog ATS Leaders, 2023–2025

Arizona logged the most road-dog covers from 2023–2025; Seattle led qualifying cover rate. See every count, denominator, and limit.

NFL Data · 2026-08-17

NFL Week 1 Underdogs ATS: The 1999–2025 Record

Week 1 underdogs went 218-196-10 ATS from 1999–2025. Road dogs and teams getting seven or more points led, with clear sample limits.

NFL Betting · 2026-08-15

New York Giants 2026 Betting and Fantasy Hub: Dart, Nabers, Tracy, and Skattebo

Dallas favors 2.5-3 over the Giants and our August pick is five points stale. The Week 1 board flips Tracy and Skattebo, and likes Jaxson Dart.

Updated 2026-09-07

Model checks · 2026-08-05

NFL Betting Models: What They Are and What Ours Watches

Our NFL model is a 64-model panel, not one number. See how far 38 spread models disagree on one game, and which model feeds the published pick.

Updated 2026-09-07

Market moves · 2026-07-27

MLB Trade Deadline Bets: How Roster Shake-Ups Move Lines

MLB trade deadline betting: how roster shake-ups shift team totals and spreads, plus the 7-day market reset window where models find edge.

Updated 2026-06-10

Model checks · 2026-07-18

Sharpe Ratio vs ROI: Judging a Betting Strategy Beyond Win Rate

Why ROI and win rate alone hide the risk in a betting strategy, and how a Sharpe-style ratio scores return per unit of variance.

Model checks · 2026-07-18

Overfitting and Look-Ahead Bias: Why Your Backtest Lies

The two ways a betting backtest fools you — overfitting and look-ahead leakage — and the discipline that tells a real edge from noise.

Bankroll & process · 2026-07-18

The Math of Hedging a Futures Ticket: When to Lock Profit

How to hedge a live futures ticket, the exact math to lock guaranteed profit, and when letting it ride actually beats hedging.

Betting basics · 2026-07-18

How to Read Betting Odds and Break-Even Probability

Convert American, decimal and fractional odds. Separate payout from profit, calculate break-even probability, and check the limits before comparing bets.

Updated 2026-09-07

Bankroll & process · 2026-07-13

NFL Preseason: Sharp Action Patterns to Watch

Sharp bettors attack the season by comparing books, not scores. This week's 16-game board has exactly one real disagreement.

Updated 2026-09-07

Platform · 2026-07-06

How Claude Fable Became Shark Snip's Edge Engine (and What That Means for Your Bets)

Anthropic's Claude Fable designed Shark Snip's model lab: calibrated probability intervals, replay-proof backtests, and an AI that says when not to bet.