ON the day when it was confirmed that Scott Borthwick is leaving, Keaton Jennings became the first batsman to score seven championship centuries in a season for Durham.

The South Africa-born left-hander resisted approaches from elsewhere to sign a new four-year contract and continued to lead the battle for division one survival, albeit with little assistance.

Mark Footitt began by splattering Ben Stokes's stumps on his way to four wickets as Durham slipped to 233 for seven at tea with Jennings on 110.

While Stokes scored all his 24 runs in boundaries, Jennings went serenely on his way to a 171-ball century then watched three more batsmen surrender.

Jack Burnham reached 15 when an attempted pull off Stuart Meaker flew over gully, but on trying the shot again he lobbed a catch to mid-off to bring in Stokes.

Although one of the England all-rounder's fours was edged wide of the slips when looking to turn Meaker to leg, it was beginning to look too easy for him when he dispatched Footitt through the covers then clipped him to the mid-wicket boundary.

But Stokes was rooted to the crease when the pacy left-armer speared one through his defences to hit off and middle.

Surrey turned to Zafar Ansari at 194 for four after 49 overs and Jennings turned him through mid-wicket for four then lofted him to the rope over mid-on. A reverse paddle for his 18th four took him to his hundred.

After digging in to contribute 14 to a stand of 53 Paul Collingwood reached for a wide, full ball from Footitt and gave a catch to gully.

Graham Clark and Stuart Poynter both failed to score, the former spooning an innocuous ball to mid-wicket and the latter edging low to third slip.