|Date of birth:||27 June 1997|
|Height:||190cm (6' 3")|
|Weight:||105kg (16st 7lb)|
One of the most prized assets in English rugby, Mercer made his debut against Newcastle in September 2016 and has been a regular fixture since.
The son of former New Zealand Rugby League international Gary, Mercer captained England U20 to the Six Nations Grand Slam before guiding his country to the final of the World Rugby U20 Championship in summer 2017.
A quick and strong ball carrier from the back row, Mercer will be looking to continue the form that saw him catch the eye of England Head Coach Eddie Jones.