■By PAUL SMITH

Threat: Rory Pitman on the charge for Knights

Flying machine: Jona Bulumakau dives over Pete White to score in the corner for Coventry
PICTURE: Phil Hutchinson

COVENTRY clinched a Championship Cup quarter-final spot with this narrow home win over Doncaster Knights.
Sparked by an outstanding display from powerhouse centre Rob Knox, the hosts scored four tries during a fourth-quarter purple patch which wrestled control away from the visitors’ big pack.
His team’s outstanding against-the-elements second half display left director of rugby Rowland Winter...