Alastaoir Chalmers won bronze for Guernsey four years ago [PA Media]Alastair Chalmers missed out on the chance to win Guernsey's first medal at the 2026 Commonwealth Games.The reigning British champion, 26, came sixth in the 400m hurdles in Glasgow. It meant he could not add to the bronze medal he won in the event four years ago.Chalmers stumbled over a hurdle with around 200m to go as he challenged for the lead and lost ground he could never make up as he finished in 50.24 seconds .The race was won by Nigeria's Ezekiel Nathaniel in 48.47 seconds as England's Jake Minshull took silver and Jamaica's Assinie Wilson bronze. The result also means he misses out on becoming only the second islander to win medals at consecutive Commonwealth Games.Pistol shooter Adrian Breton remains the only person from Guernsey to reach the podium more than once - he won individual rapid fire silver in 1986, gold in 1990 and pairs bronze in 1994.Despite not winning a medal, Chalmers is still the most-decorated track and field athlete ever to come from Guernsey. He is a six-time British 400m hurdles champion - regaining the title he lost last year earlier this summer.He made the semi-finals of the 400m hurdles at the last Olympic Games, where he crashed out three-quarters of the way around after clipping a barrier.His Guernsey record of 48.30 seconds is 1.24 seconds faster than any other islander has ever managed.