It's high stakes for UK firms as sports wagering starts to spread out in America.
From Tuesday, brand-new guidelines on wagering entered into result in Delaware, a tiny east coast state about 2 hours from Washington.
Neighbouring New Jersey might start accepting sports bets as early as Friday.
The modifications are the very first in what might end up being a wave of legalisation after the Supreme Court last month cleared the way for states to allow sports wagering.
The industry sees a "as soon as in a generation" opportunity to develop a new market in sports-mad America, said Dublin-based monetary analyst David Jennings, who heads leisure research at Davy.
For UK companies, which are grappling with debt consolidation, increased online competitors and harder guidelines from UK regulators, the timing is especially suitable.
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But the market states relying on the US stays a dangerous bet, as UK companies deal with complex state-by-state policy and competition from established local interests.
"It's something that we're actually focusing on, however similarly we don't wish to overhype it," said James Midmer, spokesman at Paddy Power Betfair, which just recently acquired the US dream sports site FanDuel.
'Require time'
The US represented about 23% of the world's $244bn (₤ 182bn) in gaming revenue in 2015, according to a report by Technavio, external released in January.
Firms are hoping to tap into more of that activity after last month's choice, which overruled a 1992 federal law that disallowed states outside of Nevada and a few others from authorising sports betting.
The ruling discovered the law was an over-reach of federal power. But the court it did not in fact legalise sports betting, leaving that concern to regional lawmakers.
That is expected to cause substantial variation in how companies get certified, where sports betting can happen, and which occasions are open to speculation - with big implications for the size of the market.
Potential earnings ranges from $4.2 bn to nearly $20bn each year depending on factors like how lots of states transfer to legalise, Oxford Economics estimated in a 2017 research study for the American Gaming Association.
"There was a great deal of 'this is going to be huge'", stated Will Hawkley, London-based head of leisure for specialists KPMG.
Now, he stated: "I believe the majority of people ... are taking a look at this as, 'it's an opportunity however it's not going to be $20bn and it's going to be state by state and it's going to take some time'."
'Remains to be seen"
Chris Grove, managing director at Eilers & Krejcik Gaming, predicts that 32 states will legalise sports betting in some form by 2023, creating a market with about $6bn in yearly profits.
But bookmakers deal with a far various landscape in America than they carry out in the UK, where betting shops are a frequent sight.
US laws limited betting largely to Native American lands and Nevada's Las Vegas strip until fairly recently.
In the popular imagination, sports wagering has actually long been linked to a 1919 baseball World Series match-fixing scandal.
States have actually likewise been slow to legalise numerous forms of online betting, regardless of a 2011 Justice Department viewpoint that appeared to get rid of barriers.
While sports betting is generally seen in its own classification, "it clearly stays to be seen whether it gets the type of momentum individuals think it will," said Keith Miller, law professor at Drake University and co-author of a book about sports betting policy.
David Carruthers is the previous primary executive of BetonSports, who was apprehended in the US in 2006 for running an overseas online sportsbook and served prison time.
Now a specialist, he states UK firms ought to approach the marketplace thoroughly, selecting partners with caution and preventing bad moves that could lead to regulator reaction.
"This is an opportunity for the American sports gambler ... I'm unsure whether it is a chance for service," he says. "It truly is reliant on the outcome of [state] legislation and how the business operators pursue the opportunity."
'It will be partnerships'
As legalisation starts, sports wagering companies are lobbying to fend off high tax rates, as well as demands by US sports leagues, which desire to collect a percentage of income as an "integrity fee".
International companies deal with the added challenge of a powerful existing video gaming market, with gambling establishment operators, state-run lottery games and Native American tribes that are looking for to defend their turf.
Analysts state UK firms will need to strike partnerships, using their proficiency and innovation in order to make inroads.
They indicate SBTech's recent statement that it is offering technology for Kentucky Derby operator Churchill Downs as an example of the sort of offers most likely to materialise.
"It will be a win-win for everyone, however it will be collaborations and it will be driven by innovation," Mr Hawkley said.
'It will simply depend'
Joe Asher, primary executive at William Hill US, is clear-eyed about the truths.
The company has been purchasing the US market because 2011, when it purchased three US companies to establish a presence in Nevada.
William Hill now uses about 450 individuals in the US and has announced collaborations with gambling establishments in Iowa and New Jersey.
It works as threat manager for the Delaware Lottery and has actually invested millions together with a regional designer in a New Jersey horse racing track.
Mr Asher stated William Hill has actually become a family name in Nevada however that's not necessarily the goal all over.
"We certainly intend to have an extremely considerable brand presence in New Jersey," he stated. "In other states, it will just depend on policy and possibly who our local partner is."
"The US is going to be the most significant sports betting market in the world," he included. "Obviously that's not going to occur on the first day."