Data tools for sports, prediction markets, and more.

Daily dashboards that surface where the books disagree. Companion to the blog.

In season

NFL Start/Sit

Who to start this week, priced off betting markets instead of projections. Reads your Sleeper leagues.

Open dashboard → In season

Root For/Against

Which players to cheer for and against across every one of your Sleeper leagues.

Open dashboard → Live

Today's Arbitrage Picks

Where prediction markets disagree, refreshed every few hours.

Open dashboard → Tool

Arb Calculator

Lock in equal payoffs across two betting markets. Free, no login.

Open calculator → 2026 season

Best Ball Price Differences

Where DraftKings and Underdog ADPs disagreed, frozen at the close of the 2026 draft season.

Open dashboard →

What People Are Saying

★★★★★
Wow this guy knows ball.
Last place, 12-team PPR
★★★★★
Wow this truly gave me easy W's, thank you!
Guy who still drafts kickers in round 9
★★★★★
Now this is a guy who gets it.
My league commissioner, begrudgingly