Alistair Brownlee and Sir Mo Farah among Team GB stars set to miss out on Tokyo

Alistair Brownlee and Sir Mo Farah are just two of a growing number of medal-winning Team GB stars facing the prospect of missing out at next month's Tokyo Olympics. Poor performances, untimely injuries and emergent rivals are just some of the reasons why the squad for the delayed Games will have a distinctly different feel from those who hauled with them the legacy of London 2012.