A participant prepares to compete during the "Trizna" international MMA tournament in memory of fallen heroes, bringing together Ukrainian and foreign fighters, veterans, active-duty military personnel, adaptive athletes, and civilian athletes, in Kyiv on October 9, 2026, amid the Russian invasion of Ukraine. (Photo by Tetiana DZHAFAROVA / AFP via Getty Images)

A participant competes during the "Trizna" international MMA tournament in memory of fallen heroes, bringing together Ukrainian and foreign fighters, veterans, active-duty military personnel, adaptive athletes, and civilian athletes, in Kyiv on October 9, 2026, amid the Russian invasion of Ukraine. (Photo by Tetiana DZHAFAROVA / AFP via Getty Images)

A visitor looks at photographs of fallen soldiers before the start of the "Trizna" international MMA tournament in memory of fallen heroes, bringing together Ukrainian and foreign fighters, veterans, active-duty military personnel, adaptive athletes, and civilian athletes, in Kyiv on October 9, 2026, amid the Russian invasion of Ukraine. (Photo by Tetiana DZHAFAROVA / AFP via Getty Images)

A participant competes during the "Trizna" international MMA tournament in memory of fallen heroes, bringing together Ukrainian and foreign fighters, veterans, active-duty military personnel, adaptive athletes, and civilian athletes, in Kyiv on October 9, 2026, amid the Russian invasion of Ukraine. (Photo by Tetiana DZHAFAROVA / AFP via Getty Images)

Participants compete during the "Trizna" international MMA tournament in memory of fallen heroes, bringing together Ukrainian and foreign fighters, veterans, active-duty military personnel, adaptive athletes, and civilian athletes, in Kyiv on October 9, 2026, amid the Russian invasion of Ukraine. (Photo by Tetiana DZHAFAROVA / AFP via Getty Images)

Participants compete during the "Trizna" international MMA tournament in memory of fallen heroes, bringing together Ukrainian and foreign fighters, veterans, active-duty military personnel, adaptive athletes and civilians, in Kyiv on October 9, 2026, amid the Russian invasion of Ukraine. (Photo by Tetiana DZHAFAROVA / AFP via Getty Images)

Participants compete during the "Trizna" international MMA tournament in memory of fallen heroes, bringing together Ukrainian and foreign fighters, veterans, active-duty military personnel, adaptive athletes and civilians, in Kyiv on October 9, 2026, amid the Russian invasion of Ukraine. (Photo by Tetiana DZHAFAROVA / AFP via Getty Images)

Participants compete during the "Trizna" international MMA tournament in memory of fallen heroes, bringing together Ukrainian and foreign fighters, veterans, active-duty military personnel, adaptive athletes and civilians, in Kyiv on October 9, 2026, amid the Russian invasion of Ukraine. (Photo by Tetiana DZHAFAROVA / AFP via Getty Images)