Lampard has hit back at Jose Mourinho for trying to blame Rudiger for the Son red card.
Asked for a response to Mourinho’s criticism of Rudiger, Lampard said: “With Toni, in this incident when he’s having to post after the game about something we know is a huge deal (racism), I think to question his integrity in that time is disappointing for sure.
“Pretty universally, certainly what I heard in the commentary and the post-match reflection was that the Son incident was a red card.
“It wasn’t brutal but it was instinctive that warrants a red card in the modern day.
“It was pretty clear that was the case. I wouldn’t question Toni’s integrity on that.
“So I do defend Toni firmly on it.”
Lampard also backed Rudiger on the racism incident.
“I spoke to him briefly after the game, but I haven’t had a one-on-one to speak to him about the incident as such,” said Lampard.
“I saw Toni’s social media post, I thought it was well put, from the heart and something that he feels very strongly about.
“I’ll speak to him today when I see him.
“I would like to think the players know I am with them on anything like this.
“I’ll have the same conversation with Toni that I had with Tammy after the incident earlier this year.
“And I will tell them and take the time to make sure he knows I support him, and that I support all my players in this situation.”