Sports Betting Archive

Karl Whelan’s Sports Betting Page

Welcome to my Sports Betting page. Here you’ll find my writing on the economics of sports betting, including blog posts, […]

You place a bet 24 hours before the game on a team and then see the closing odds were worse

I have written about how the idea that bookmakers set odds to balance the books is a myth. Here I

Multi-leg bets go by many names. You pick a set of bets and if your first bet wins, your return

In earlier posts, I explained that bookmakers set odds using two ingredients: their assessment of the probability that a bet

In my previous posts, I described how to calculate the bookmaker’s margin — the fraction of money placed with bookmakers

My book’s name, Fine Margins, comes from the following. Every odds quote from a bookmaker combines two things: the bookmaker’s

This page provides links to two different spreadsheets that calculate the bookmaker’s profit margin and the underlying probabilities under the

Sports betting has changed dramatically over the past decade. Following the legalization of sports betting across much of the United

I recently sat down with Andew Gouldson from the UCD Economics Society to discuss prediction markets, sports betting and some