WinnerOdds isn’t a tipster in the usual sense, and that’s what makes it interesting. There’s no one studying form and posting a bet. Instead, machine learning algorithms estimate the true probability of a match before the bookmakers publish their prices, then flag any bookmaker offering more than those estimates.

It then tells you exactly how much to stake, based on your bankroll and the value it’s found, using a modified Kelly Criterion. You get a notification, you place the bet, you log it. Simple.

What impressed me most is how straight they are with people. Plenty of services hide the uncomfortable bits. WinnerOdds put them front and centre. They say plainly that most bookmakers will eventually limit your accounts, and that the only answer is spreading bets across as many as possible. They define the long term as 1,000 bets and tell anyone unwilling to stick around for that to try the lottery instead. I like that. It’s the opposite of the “turn £10 into £1,000” crowd.

It has serious backing too. Joseph Buchdahl has praised its transparency and track record, and Pete Ling has it in the Smart Betting Club Hall of Fame.

But it’s not for everyone. They recommend a minimum bankroll of €1,000 and ideally €3,000 to €5,000. The tennis side averages around 11 bets a day, and with ITF events making up around 70% of worldwide tennis, you’ll want bookmakers that price those lower-tier matches. Most selections aren’t in markets offered on the exchanges, so Betfair-only punters will struggle.

If you have the bankroll, a spread of accounts and the discipline to follow a system for months, this is one of the most credible products out there. If you’re betting a few quid for fun, the subscription will likely eat any profit.

18+. Please gamble responsibly — BeGambleAware.org.