Wolves fan Suzanne Waterhouse and her son were also at the fixture.
Ms Waterhouse said she could see tension building through the match and described the ensuing scenes as “absolutely idiotic and stupid”.
Another Wolves fan, Jez Constantinou, said he was at the other end of the ground from where the trouble started.
“We could see pretty much everything that was going on and could see it was escalating and becoming more intense as time went on,” he said.
Mr Constantinou added it was apparent there were Wolves fans in the home section of the stadium and described riot police “batoning back” West Brom fans trying to get on the pitch.
One supporter told BBC Radio WM after the game: “The behaviour in there is awful, there’s trouble all over the stadium. It’s not about the football then…and that’s what’s really, really sad.”
