Benkenstein’s dismissal, bowled by Rankin on 75, brought an end to the 150 plus partnership, it was a case of one wicket brings two when Michael Richardson fell two deliveries later, trapped lbw.
Another Blackwell boundary saw Durham claim the fifth and final batting bonus point with three deliveries to spare and in the same over he claimed his 25th first class hundred, his third for Durham, from 114 balls, including 14 fours and two sixes.
Scott Borthwick added 18, including the boundary that saw Durham’s total equal the Warwickshire first innings, before he was stumped off Best with the score 441-8.
A standing ovation from the spectators at Emirates Durham greeted Blackwell as he returned to the pavilion having been run out on 125 in the 43rd over, just as the hosts passed the 450 mark.
A massive six, which bounced off the Media Centre roof saw Durham reach 465 before he was bowled by Best on 15 with the next delivery.
Callum Thorp picked up the wicket of danger man Chopra, who was caught behind on 8, before Warwickshire reached 20.
With eight overs to go Scott Borthwick came on at the Lumley End and struck twice in five balls, Porterfield (9) and his replacement, Mohammad Yousaf (0) both out lbw with Warwickshire 45-3.
Borthwick picked up a third wicket, that of Westwood (27), who nicked the delivery to the slips with Muchall claiming the catch.
At the close Warwickshire were 52-4, Best 1* and Clarke 0*.