KEATON Jennings and Michael Richardson continued their superb form wth a stand of 158 in today's Royal London Cup tie against Northamptonshire at Chester-le-Street.

Jennings' second century of the series took his aggregate to 403 from five games and Richardson boosted his tally to 351 by making 68.

But Durham wobbled badly when both fell in quick succession and from 186 for two in the 34th over on Richardson's departure they lost momentum .

But it was picked up brilliantly by Paul Collingwood as the last eight overs yielded 65 to take the total to 291 for seven.

The lack of depth in the batting was exposed as Graham Clark struggled for 16 balls to score nine and Cameron Steel made only four. With Jack Burnham and Ryan Pringle injured, Durham have no other options to fill the middle order slots.

The value of experience was all too apparent as it was left to Collingwood to ensure Durham made most of the 82 they would have hoped for from the last ten overs to reach 300.

Helped by some sprightly running from Paul Coughlin, Collingwood made 53 not out off 43 balls.