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WagerBrain

A package containing the essential math and tools required for sports betting and gambling. Once you've scraped odds from Covers.com, Pinnacle, Betfair, or wherever, import WagerBrain and start hunting for value bets.

Image of The Big Board

Phase 1 (complete):

  • Convert Odds between American, Decimal, Fractional
  • Convert Odds to Implied Win Probabilities and back to Odds
  • Calculate Profit and Total Payouts
  • Calculate Expected Value
  • Calculate Kelly Criterion
  • Calculate Parlay Odds, Total Payout, Profit

Phase 2 (complete):

  • Evaluate Wager-Arbitrage Opportunities
  • Calculate bookmaker spread/cost
  • Calculate the Bookmaker's Vig
  • Calculate Win Probability from a team's ELO (538-style)

Phase 3 (in progress):

  • Scrapers to gather data (Basketball Reference, KenPom etc.) [Partially implemented]
  • Value Bets (take in sets of odds, probabilities and output the most effective betting implementation)
  • Scan for Arbitrage (search scrape bookmakers to feed into Phase 2's Arbitrage evaluator)

Examples

Parlay 3 wagers from different sites offering different odds-styles:

odds = [1.91, -110, '9/10']
parlay_odds(odds)
>>>> 6.92

No clue how to read decimal odds because you're American? (wager * decimals odds, though...super simple), then convert them back to American-style odds:

american_odds(6.92)
>>>> +592

What's the Vig on the Yankees vs Dodgers?

Yankees -115
Dodgers +105
Betting 115 to win 100 on Yankees
Betting 100 to win 205 on Dodgers

vig(115,215,100,205)
>>>> 2.26%

Arbitrage Example

            5Dimes	Pinnacle
Djokovic    *1.360*	1.189
Nadal	    3.170	*5.500*

odds = [1.36, 5.5]
stake = 1000
basic_arbitrage(odds, stake)

>>>> Bet $801.53 on Djokovic
>>>> Bet $198.47 on Nadal
>>>> Win $90.51 regardless of the outcome

KenPom NCAAB Scraper

ken_pom_scrape()
>>>>
        Rk                    Team  Conf  ...   OppO   OppD  NCOS AdjEM
0      1.0                  Kansas   B12  ...  107.4   94.7        9.58
1      2.0                 Gonzaga   WCC  ...  103.5  101.0       -2.09
2      3.0                  Baylor   B12  ...  106.4   96.2        1.38
3      4.0                  Dayton   A10  ...  104.1  101.3       -0.74
4      5.0                    Duke   ACC  ...  106.0   98.7        2.60
..     ...                     ...   ...  ...    ...    ...         ...
364  349.0  Maryland Eastern Shore  MEAC  ...   97.6  104.1        7.78
365  350.0                  Howard  MEAC  ...   96.7  105.0        0.96
366  351.0  Mississippi Valley St.  SWAC  ...   97.8  103.9        5.14
367  352.0            Kennesaw St.  ASun  ...  102.0  103.7        4.10
368  353.0             Chicago St.   WAC  ...  100.6  104.3       -0.75