Some excellent work in the field by Mark Wood saw a run out off the second ball after the break. Richardson’s third catch came off the bowling of Buckley and Kent/Essex were 150-3.
Another 40 runs were added to the total before Arshad was brought on and struck in his first over. Buckley picked up a second wicket as the Kent/Essex total reached 254-6.
Ben Harmison picked up his first wicket after tea and with Rushworth and Jennings picking up late wickets the hosts were 428-9 at the close with Napier 135* and a 7th wicket partnership over 150.
On day two Richardson was replaced by Kent keeper Scott McKechie and Ben Harmison took over the captaincy.
Rushworth claimed the final scalp of the Kent/Essex innings, taking his haul to four, with Napier unbeaten on 147. Mark Wood bowled well throughout the innings with little reward.
A mature opening partnership from Ben Raine (55*, who went on to score 92) and Keaton Jennings (34*) saw Durham 92-0 at lunch on day two. The partnership came to an end when Jennings was dismissed for 41.
Singh and Harmison were dismissed in quick succession, with Durham 154-3.
Roebuck became the fourth batsman to be dismissed by the spinners, with Ben Raine number five as he was out on 92.
At tea Durham were 207-5. Mark Wood was the first batsman to fall to a seamer, when he was dismissed on 31 with Durham 235-6.
Arshad followed him back to the pavilion soon after with the visitors seven down and still 53 runs behind the follow on total.
Durham were 257 all out but the follow on was not enforced.
Buckley picked up a wicket in his first over with Kent/Essex 30-1. At the close the hosts were 37.1.
The Durham attack couldn’t make the breakthrough in the morning session on day three and at lunch the hosts were 185-1 with the batsmen making comfortable progress.
Kent/Essex declared on 287-3 with a lead of 471, Buckley the pick of the Durham attack with 2-75 off 22 overs.
In response, Keaton Jennings was caught behind on the stroke of tea leaving Durham 15-0 and only two runs were added to the score before Singh was out lbw.
The wickets fell thick and fast with Harmison bowled on 24, Raine posting the top score of 48 before he was bowled with Durham 81-4.
A devastating hat-trick from Napier saw Wood (12), Arshad (0) and Mckechnie all bowled and Durham’s total 114-7. Napier claimed another wicket when Roebuck was trapped lbw with the score 121-8.
Durham made it to 179 before the ninth wicket fell, that of Buckley, who added 19.
Durham resumed on day three with one wicket remaining and despite a good effort with the bat from Rushworth (57*) the visitors were bowled out for 203.
A match scorecard will be posted in due course.