By STEVE HOSSACK

Stepper: Jake Henry tests the Doncaster cover

DONCASTER Knights put Rotherham Titans to the sword to underline that they and not the former Premiership club are top dogs in South Yorkshire.
Knights’ director of rugby Clive Griffiths had said: “The form book goes out of the window in derby games.”
Not on this occasion. Knights built on their excellent opening day win at Jersey while Titans, well beaten at home by Nottingham, suffered a similar fate on their first road trip.
Griffiths said: “We’ve picked up nine points from our first two gam...