Sports core tier intermediate Reliability 85/100

Vegas Lines

What do the sharpest bookmakers think?

82% Line Accuracy

Overview

Compares sportsbook opening and current lines across major bookmakers to identify where the smart money is and where the market sees value.

What It Does

Aggregates odds from Vegas sportsbooks (DraftKings, FanDuel, BetMGM, Caesars, etc.) and compares them with prediction market prices on Polymarket and Kalshi. Identifies pricing discrepancies between traditional bookmakers and decentralized markets.

Why It Matters

Vegas lines are set by professional oddsmakers who process millions of data points. When prediction market prices diverge significantly from Vegas consensus, it often signals mispricing and opportunity.

How It Works

Pulls live odds from multiple sportsbooks, converts American/decimal/fractional odds to implied probability, then compares against prediction market prices. Flags divergences above 5% as potential edge opportunities.

Key Indicators

  • Opening Line

    high

    Where the line opened at major books

  • Current Consensus

    high

    Average line across all major sportsbooks

  • Book-to-Market Spread

    high

    Gap between Vegas odds and prediction market price

  • Sharp Book Price

    high

    Lines at sharp-friendly books like Pinnacle/Circa

  • Vig-Free Probability

    medium

    True implied probability after removing juice

Data Sources

Example Questions This Pillar Answers

  • → What are Vegas odds on tonight's NBA game?
  • → Is this Polymarket price significantly different from sportsbook odds?
  • → Where are the sharpest books pricing this game?
  • → What's the vig-free probability for this matchup?

Use Vegas Lines on a real market

Run this analytical framework on any Polymarket or Kalshi event contract.

Try PillarLab