In the away end at San Sebastian's Anoeta Stadium, fans unfurled a flag that read simply: "From -17 to Europe." For anyone who knew Bournemouth's history, those four words told an almost unbelievable story — and the small south-coast club behind it had just made the next impossible chapter real.

Bournemouth beat Spanish side Real Sociedad 2-1 in their very first European match, a Europa League opener played in the club's 127th year. It was no lucky escape either. For a full 45 minutes they suffocated a team that had beaten Atletico Madrid to win Spain's Copa del Rey last season and is led by World Cup winner Mikel Oyarzabal. Goalkeeper Djordje Petrovic's sharp reflexes helped them hold on when the Basque side roared back after the break.

Manager Marco Rose called it "a brilliant win in our first European game... brilliant for the club and the 2,000 fans from Bournemouth." To the rest of the football world, Europe may just look like the next logical step for a well-run, ambitious club. But for the supporters celebrating, the whole thing still feels surreal.

Just 18 years ago, Bournemouth was on the brink of extinction. Entering administration triggered a 10-point deduction and relegation to League Two, the fourth tier of English football. To even stay in the league for the 2008-09 season, they had to accept a 17-point penalty and promise not to appeal. The idea that a £100m midfielder and a Brazilian winger would one day carry them to victory in European competition was pure fantasy.

That midfielder is Alex Scott, who swaggered around San Sebastian showing why top Premier League clubs are chasing him. The winger, Rayan, is the reason Bournemouth reportedly demand a £130m release clause. Both delivered on Thursday night.

The rise can be traced to January 2009, when Eddie Howe took over and guided the club to safety — finishing nine points clear of relegation despite the deduction. Six and a half years later, a transformed Bournemouth reached the Premier League. Now a whole generation of fans has known nothing but top-flight football.

On this historic night, captain Adam Smith — who joined on loan during Howe's first stint back in 2010 and has stayed ever since, nearing 400 league appearances — led the team out. At 35 years and 141 days, he became the oldest English outfielder to debut in major European competition since Ipswich's Reginald Pickett in 1962. "It's such a proud moment," former defender Charlie Daniels said, "not only for him, but for his family, his team-mates and old team-mates."

Bournemouth have weathered relegation in 2020 and the annual fight to replace stars poached by Europe's giants. Even their qualifying manager, Andoni Iraola, has already moved on to Liverpool. But on this night, in this famous victory, the club that once started a season on -17 points proved it is not done dreaming.