Players of Dortmund (yellow) and Union Berlin stand in a smoke-filled pitch as the match was halted due to too much smoke caused by flares lit by fans during the German first division Bundesliga football match between Union berlin and Borussia Dortmund in Berlin on October 17, 2026. (Photo by John MACDOUGALL / AFP via Getty Images) / DFL REGULATIONS PROHIBIT ANY USE OF PHOTOGRAPHS AS IMAGE SEQUENCES AND/OR QUASI-VIDEO