James Taylor scored his first century of the season as Nottinghamshire closed in on victory over East Midlands rivals Derbyshire.
Taylor scored a gritty 112 in Nottinghamshire's 443, and by stumps Derbyshire had been reduced to 143-5 in their second innings - with Shivnarine Chanderpaul one of those dismissed - and the hosts are still 44 runs from making the visitors bat again.
Notts began the day on 323-5 with Taylor on 67no, and although his fourteenth first class century was the slowest of his career - off 265 balls - it was exactly what his team needed in the circumstances.
Skipper Chris Read (33) fell in the seventh over of the morning, chasing a wide ball from Tim Groenewald but Stuart Broad played fluently whilst Taylor dug in.
Broad was dropped three times in his near-run-a-ball 41 before he top-edged Jon Clare to long leg and Andre Adams, who will miss five weeks with a torn calf, steered his first ball to first slip.
Taylor did not hit a boundary before lunch, but reached three figures shortly after through the slip cordon before falling to spinner David Wainwright.
With Adams unable to bowl, Nottinghamshire still had a lot to do on a pitch which had become increasingly easy to bat on.
They started well with Luke Fletcher trapping Billy Godleman (1) lbw in the fourth over and then Harry Gurney pinned Wes Durston (9) in front with the total on 24.
Chanderpaul (57) and skipper Wayne Madsen (47) dug in for 29 overs before Fletcher got one to lift to have the West Indian caught behind.
Madsen's three-hour resistance ended when Gurney nipped one back to trap him lbw and Ross Whiteley (4) edged Samit Patel low to first slip to leave Derbyshire on the brink of their second defeat of the season.