KEATON Jennings' fourth century of the season ruined Yorkshire's hopes of a three-day win at Chester-le-Street.

After resuming on 46 this morning, the left-handed opener was still there on 134 at tea, when Durham were 335 for six, leading by 184.

Jennings shared a fifth-wicket stand of 117 with Paul Collingwood, who made 61, and at the interval Usman Arshad had contributed 48 to an unbroken stand of 83.

Jennings displayed extreme vigilance in reaching his hundred off 228 balls, but never lost sight of opportunities to cut and drive through the off side.

He drove Tim Bresnan's first delivery with the second new ball through extra cover and just scrambled home for the third run which took him to his century.

Given the depleted nature of Yorkshire's attack, Bresnan and Steve Patterson had a huge burden to bear and Patterson looked forlorn when an impassioned lbw appeal against Collingwood was turned down.

It wasn't costly as the home captain added only six before the next appeal was upheld, earning a wicket for the re-modelled off spin of Kane Williamson, who was once deemed to have a suspect action.

Ryan Pringle clubbed four fours in his 20 before Bresnan skidded one through to splatter his stumps, then Arshad also played some bold strokes. He was missed by Alex Lees at slip on 33, denying Ben Coad a maiden wicket.