Belgium have got plenty of attacking talent to call upon, but their Premier League trident of Romelu Lukaku, Kevin De Bruyne and Eden Hazard failed to make an impact against a resolute Italian defence which proved solid in Lyon.
A cutting edge at the other end of the pitch combined with an impressive rear-guard action secured Antonio Conte's men an opening victory and the bookmakers have taken drastic action on the Azzurri, with Paddy Power slashing their outright winner price from 18/1 (19.0) to just 11/1 (12.0).
Those odds are a joint best price with other firms cutting the Italians to as short as 9/1 (10.0). With several of the more fancied teams failing to make a distinct impression, Conte's men are the first international force to lay down a marker at the tournament thus far and there has certainly been plenty of support in backing them after something of a pre-tournament pessimism in the markets.
Grazianno Pelle capped an impressive performance with a late goal and he is now just 16/1 (17.0) to finish as top scorer. He looks set to lead the line alongside Eder and with the Southampton frontman offering a threat with his movement as well as in the air, he will be confident of continuing to fire against both Sweden and Republic of Ireland.
Italy are just 1/6 (1.17) to top Group E after opening their account with three points and Belgium are 10/1 (11.0) to turn finish top of the pile, the same price as Sweden, who came from 1-0 down to claim a draw against the Boys in Green who have injury concerns over both Jon Walters and goalscorer Wes Hoolahan.
Martin O'Neill's side can take plenty of positives from their result against the Swedes but they're the outsiders to finish top at 12/1 (13.0) and 5/4 (2.25) with Paddy Power to qualify for the knockout stages. Sweden are 11/10 (2.10) to progress with the same firm.