A strong World Cup performance helped lift first quarter revenues 30% at online bookmaker and betting exchange Betfair compared to the same period last year, making it a record three-month period for the group.
Earnings before interest, tax, depreciation and amortisation (EBITDA) rose 39% to £34.5m.
Excluding the FIFA football tournament, the FTSE 250 company still raised revenue 12% thanks to an improved gaming performance and continued growth in its US division.
However chief executive Breon Corcoran cited the World Cup as a "unique opportunity to acquire new customers and increase engagement with existing customers", enabling Betfair to enjoy record new customer activations, with 181% increase in customer acquisition and a 65% increase in the number of active customers in sustainable markets.
Sustainable regulatory markets, namely UK, Ireland, US, Italy, Denmark and Malta, delivered 17% revenue growth and meant the sustainable revenue mix was up three percentage points to 80%.
Corcoran said: "The introduction of the sportsbook means we can now offer superior value to customers who prefer promotion-led offers as well as those who simply want the best odds offered by the exchange."
Mobile revenue soared 162%, with revenue strong in all areas following significant product investment, and this channel contributed 70% of sportsbook revenues and 28% of gaming revenues up from 45% and 14% respectively in the same period last year.
Looking forward, Corcoran said: "We are focused on a number of challenges, including our early stage investments in New Jersey online casino and Italy, and uncertainty remains in a number of unregulated markets.
"However, we are encouraged by the performance in the first quarter and the momentum of the business, and accordingly remain confident that we can deliver our expectations for the full year."
Broker Shore Capital said this was a strong trading update from the company statement but reminded that Betfair would be likely to suffer a £15m impact on EBITDA from the point of consumption (POC) tax in the UK in the full year.
"If current underlying revenue trends persist we see scope for low double-digit full year revenue growth," wrote analyst Greg Johnson.
"Excluding the £15m POC hit our forecast assumes an underlying £18m improvement in full year EBITDA. The £10m increase in Q1 leaves the group well set to deliver on this target."
Numis added that it expected this will be the best of quarter of the year and a great foundation for full year results. "It does, though, make it likely that subsequent quarters will be less eye-catching.
"Betfair is executing its strategy very well in our view. Products like 'price rush' have been launched and promoted as promised and have exceeded our expectations. We believe Betfair is set for an excellent year, continuing to exploit the combination of a unique liquid exchange and sportsbook."
Shares in Betfair were up 2% to 1,116.42p at 08:35 on Thursday.