Tyler Fletcher, 19, stood on the Hampden Park pitch at half-time on Saturday after making his Scotland debut, the weight of circumstance and expectation suddenly real. Minutes earlier, Billy Gilmour had limped off with a knee injury that would end his World Cup dream, and Fletcher — a Manchester United teenager who has played more minutes for his country than for his club — was being handed one of football's cruelest opportunities: the chance to step into a teammate's misfortune.

The timing is devastating for Gilmour, the Napoli midfielder who has been integral to Scotland's World Cup qualifying campaign. Head coach Steve Clarke didn't hide his pain: "The timing of this injury is so, so cruel and we all feel for him." But Scotland's World Cup path, secured for the first time since 1998, continues. And Fletcher, son of former Scotland captain Darren Fletcher, appears ready to walk it.

Fletcher came on as a half-time substitute in Scotland's 4-1 friendly win over Curacao, and the impact was immediate enough to impress not just Clarke but the entire squad. "Everybody was impressed — the players were impressed, the coaching staff were impressed, I had no doubts," Clarke told BBC Scotland. The manager had actually considered bringing Fletcher on earlier, when Gilmour went down, but decided to observe how the match would unfold first. It was a calculated decision that paid off.

What makes Fletcher's selection particularly resonant is the lineage. Kenny McLean, the Norwich City midfielder, played alongside Darren Fletcher at the beginning of his Scotland career and saw something familiar in the son. "I said to the lads after his first session, I could see something special in him," McLean reflected. "In my first session with Scotland, Darren stood out a mile. Fortunately for us, his son is pretty similar. There's a lot of potential, it's about using him the right way."

Fletcher arrives in a squad that was already being bolstered with youth. Steve Clarke had added four young players to the training squad the week prior as standby options: Connor Barron of Rangers, Andy Irving of Sparta Prague, and Lennon Miller of Udinese were the others considered. But it was Fletcher who stepped forward when needed — and he did so after a season in which he has appeared twice for United, coming off the bench both times. His Scotland minutes already outpace his club minutes, a reality that speaks both to his international potential and to the particular pressures facing young players at elite clubs.

There is an intriguing personal dimension too: Fletcher's twin brother Jack has chosen to represent England, a decision that underscores the complicated nature of football allegiances in the modern game. But Tyler Fletcher has committed to Scotland, and now he carries forward not just his own ambitions but also the hopes of a nation preparing for its first World Cup since 1998.

Scotland's squad flies to Florida on Sunday, with a final warm-up match against Bolivia scheduled for June 6 in New Jersey. When the tournament begins in Group C against Haiti, Morocco, and Brazil, Fletcher will be part of it — not the player Scotland expected to have, but perhaps the one it needed. Gilmour's injury may be cruel, but it has opened a door for a young talent whose father's legacy in Scottish football clearly runs deep.