Former NHL star Johnson, 29, suffered a gash to his throat in the freak accident, according to witnesses.
The game between his new team the Nottingham Panthers and the Sheffield Steelers had to be abandoned.
Eye witnesses says players from both teams formed a ring around Johnson as apparently there was quite a lot of blood.
Around 8,000 fans are believed to have witnessed the horror collision between the two players at Utilita Arena Sheffield.
I always wear one in beer league. Everyone makes fun of me saying i look like a little kid
Playing with a bunch of rec league amateurs makes it more likely that people trip/fall and skates flying in the air
Not gonna even take thr slightest risk of getting my throat slashed
They said the same thing about helmets and face guards in the 70s and 2010s. Stay safe out there!