The incident occurred late in the first period with the Oilers leading 1-0. Andersson took issue with Yamamoto after he got close to Flames goaltender Jacob Markstrom in the crease.
He then proceeded to throw an elbow at Yamamoto’s head and appeared to lead head first, using his helmet, while pushing the Oilers forward up against the boards.
Andersson addressed media on Sunday and denied any claim that he headbutted Yamamoto.
"The was no headbutt," he said. "I got a $5,000 fine for roughing, not a headbutt, so in my opinion, I didn't try or I didn't headbutt him."
Here’s Rasmus Andersson’s full account of what happened with Edmonton’s Kailer Yamamoto on Saturday night.
Andersson was assessed a double minor on the play (elbowing and roughing) and fined $5000 by the league. #Flames pic.twitter.com/Z3vBi1C8o4
— Pat Steinberg (@Fan960Steinberg) October 17, 2021
The Flames defenceman received elbowing and roughing penalties on the play.