Scotland face Brazil on Wednesday night in what could be the most consequential match in the history of the men's national team. A draw would be enough to reach the knockout stages of a major tournament for the first time — and even a narrow defeat could still see them advance from Group C.

With so much riding on the result, manager Steve Clarke faces a series of selection decisions that could define his seven-year tenure. Here are the key questions ahead of kick-off at Miami Stadium.

Does Gannon-Doak earn a starting berth?

Bournemouth winger Ben Gannon-Doak has been Scotland's most threatening attacker throughout the World Cup 2026 campaign. After logging 75 minutes against Haiti, the 20-year-old came on after an hour in the defeat to Morocco and delivered the most crosses — three — of any Scotland player on the pitch.

Clarke has raised concerns about the former Celtic player's defensive work-rate, and an injury-disrupted season means Gannon-Doak struggled with cramp against Haiti, making it unlikely he can sustain a full 90 minutes in Miami's heat.

Former Hibernian and Celtic midfielder Scott Allan, speaking on the Scottish Football Podcast, made a compelling case for his inclusion: "Unless Gannon-Doak is on the pitch, we don't look like we're going to hit the byline and get a cross in the box."

Hanley or McKenna at centre-back?

Grant Hanley was directly at fault for Morocco's opener in the 2nd minute, stepping up to play Ismael Saibari offside and instead allowing the forward to run in behind and score. Despite that error, Hanley recovered well for the remainder of the match, and his 70 caps, aerial ability, and experience have made him central to Clarke's plans.

If Scott McKenna has shaken off a calf complaint, however, he could push for a starting place. Former Motherwell and Rangers midfielder Andy Halliday argued on the Scottish Football Podcast that the Dinamo Zagreb defender should come in: "McKenna would come in for me because I think we need a lot more athleticism at the back than Hanley can give you."

Allan took the opposite view, preferring to keep Hanley alongside Jack Hendry: "As much as I think Hanley was poor for the first goal against Morocco, after that he did okay. He recovered quite well, defended quite well when crosses came in the box."

McLean pressing for a place in the XI

Ryan Christie was brought into the midfield against Morocco before being replaced by Kenny McLean on 71'. Allan credited the Norwich City midfielder with helping Scotland finish the game strongly, praising his ability to control possession and drive play forward quickly from a low block.

"Kenny is probably the best player there for taking a touch and then looking to find a pass forward quickly," Allan said — a skill that could prove vital against a Brazil side expected to dominate the ball.

Is this the game for Dykes to lead the line?

Che Adams has started both group games up front but has registered only three touches inside the opposition box. While limited service shoulders some of the blame, the question of whether Lyndon Dykes offers a more practical option against Brazil is gaining traction.

Halliday expressed doubt about Dykes' pace: "I just don't think Lyndon Dykes has got the pace anymore to play on that last line and to get on the end of things." But Allan pointed to his aerial threat as a tactical asset if Scotland are forced to play long: "You get more chance of recovering a second ball if it's going up to Dykes because he's got that spring and he's decent in the air."

Against Morocco, Dykes won one of his four aerial duels after coming on as a substitute — Adams had won none from three. Clarke's call up front could prove to be the defining selection of Scotland's World Cup 2026 campaign.