CLEVELAND — Cleveland Browns center JC Tretter said he believes Kansas City Chiefs assistant coach Greg Lewis should be disciplined by the NFL for his role in a sideline skirmish with Cleveland safety Ronnie Harrison Jr. on Sunday. Harrison was ejected from Cleveland’s 33-29 loss in the first quarter after he forcefully pushed Lewis, who shoved the Browns safety after coming over to help Chiefs running back Clyde Edwards-Helaire. Tretter, the NFL players’ union president, didn’t condone Harrison’s behavior but said Lewis needs to be held accountable by the league for his actions. “I expect that the coach gets held to the same standard — if not a higher standard — than Ronnie,” Tretter said on a Zoom call. “Being the first one in there and being a coach, putting his hands on an opposing player. An NFL spokesman said the incident is under review and that Harrison will not be suspended, but it’s likely he’ll be fined.