Horrible things happened in Lisbon.
Sporting players were attacked by 50 hooded people, who had entrance to locker rooms.
Bas Dost, top scorer of the club, was injured. He posted the photo of his head after the smash.
Also, physiotherapist Mario Monteiro and assistant Raul Jose were victims of the attack, as Bleacher Report writes (via O Jogo).
https://twitter.com/HLNinEngeland/status/996440455398248449
Some other players and head coach Jorge Jesus were also involved, according to A Bola.