Andrea Piardi has been replaced by Pierre Brousset as referee in the Six Nations clash between England and Ireland after picking up a bizarre injury. Exactly what happened to Piardi was initially unclear when he sat on the turf; however, a conversation revealing his injury was captured on the microphones. He was heard saying: “I heard it pop." Then when chatting to captains Maro Itoje and Caelan Doris, Piardi revealed: "I'm out, my quad's gone. Best of luck for the rest of the game. 29 minutes