By ADAM HATHAWAY

Big impact: Jack Walker playing for Quins

HARLEQUINS scrum coach Adam Jones admits he has been stunned by hooker Jack Walker’s form, saying the club landed a better player than they thought they had.
Walker signed for the Londoners at the start of this season after failing to nail down a regular spot at Bath.
The 25-year-old started in Quins’ first nine Premiership games as they went about defending their title with the former England U20 captain in prime form.
And Welsh propping legend Jones reckons Walker is giving the champions more bang for their buck than they w...