By LUKE JARMYN

Held: Jake Parker finds no way past Tom Calladine

FOUR tries in a 15- minute purple patch sealed Doncaster their first bonus-point win since September as wing Dougie Flockhart grabbed a hat-trick of stylish finishes.
Despite the injury-hit south west Londoners dominating the majority of the first half, a case of whitewash fever took hold and they ran out of steam when Flockhart’s second try on the 50th minute opened the floodgates.
Knights’ third win on the trot, and first at Castle Park since October, was based on dominane in the set-piece and sees the Yorks...