Ukrainian skeleton slider Vladyslav Heraskevych's disqualification from the Winter Olympics over his helmet depicting fellow athletes killed since Russia's full-scale invasion is the Games' biggest controversy so far.

Heraskevych was barred from the men's skeleton in Milan-Cortina earlier this week after he refused to stop wearing it and on Friday his appeal was denied.

He has said those featured on his helmet include teenage weightlifter Alina Perehudova, boxer Pavlo Ishchenko, and ice hockey player Oleksiy Lohinov, adding that some of them were his friends.

More than 20 athletes appear on the helmet in total - here's more on each of them.

The ongoing war in Ukraine has continued to create a deep divide, even in international sporting events. Heraskevych's helmet, adorned with the faces of fallen athletes, serves not only as a tribute but also as a bold statement against the backdrop of the Olympics.

Each face carries a story, representing the hopes and dreams extinguished by the shadows of war. The Olympian aimed to honor his compatriots, shedding light on the personal losses suffered by many Ukrainian athletes and their families.

This situation has ignited discussions about the boundaries of sports, memory, and the impacts of global events on individual lives, adding a layer of poignancy to the Olympic competition.