Sean McCann, the 21-year-old Loughborough University student and younger brother of Madeleine McCann, will make his debut at a major championships this weekend when he lines up for Scotland at the Commonwealth Games in Glasgow.

McCann is entered in three of swimming's most gruelling distance events: the 400m, 800m, and 1,500m freestyle. The 400m heats begin on Saturday morning at the Tollcross Swimming Centre, the same pool where he watched the 2014 Commonwealth Games as a nine-year-old spectator BBC Sport.

He grew up in England but qualifies for Scotland through his father, Gerry McCann. He and his twin sister were two years old when their older sister Madeleine, then three, went missing in Praia da Luz, Portugal, in 2007. The case remains an ongoing Metropolitan Police investigation.

McCann described representing Scotland at a home Games as "the pinnacle" and said having family in Glasgow makes it "even more special" BBC Sport. He was officially named in Team Scotland's swimming selection in May, part of a 23-strong squad of non-Para swimmers announced for Glasgow 2026 Team Scotland. The full squad, including Para-swimmers, numbers 33 Team Scotland.

This is not his first taste of international racing. McCann represented Scotland at the Trinbago 2023 Commonwealth Youth Games and has an open-water medal to his name — gold in the 1,500m and bronze in the 5,000m at a Mediterranean event. But the senior Commonwealth Games, on home soil, is a step up in every dimension: deeper fields, faster qualifying times, and a crowd that will know his name.

He joins a squad that includes pre-selected Olympic medallist Duncan Scott and breaststroker Angharad Evans, along with 2024 Olympians Katie Shanahan and Keanna MacInnes BBC Sport. The backstroker Jamie Ferguson was added in June to complete the lineup Scottish Swimming.

The distance freestyle events at the Commonwealth Games are unforgiving. The 1,500m — 30 lengths of a 50-metre pool — rewards patience and the ability to hold pace when the lungs are burning and the arms feel like they belong to someone else. McCann's open-water background, where drafting behind a rival saves energy for a sprint finish, may serve him well in the pool too.

For a swimmer who sat in the Tollcross stands twelve years ago, walking onto the deck on Saturday morning will close a quiet circle. The clock will not care about the story behind the lane number, but the story is there all the same.