Warwickshire 274 (Hain 77, Burgess 71) and 155 (Hain 46, Cohen 5-43) beat Derbyshire 121 (Miles 5-30, Norwell 4-24) and 117 (Madsen 29, Hannon-Dalby 4-24) by 191 runs
Oliver Hannon-Dalby bowled Warwickshire to a crushing 191-run victory as Derbyshire's batting folded again in the LV=Insurance County Championship match at Derby.
Faced with a target of 309, Derbyshire crumbled for the second time in the match and were bowled out for 117 before tea on the third afternoon with Hannon-Dalby claiming 4 for 24.
The home side had a chance when they bowled Warwickshire out for 155 with Michael Cohen taking 5 for 43 but a post lunch collapse condemned them to a fourth defeat of the season.
Warwickshire's fourth victory takes them to the top of Group 1 and boosts their chances of qualifying for Division One with two games to play.
Derbyshire have yet to win a match but they were in with a slim chance of ending that run when they took the last three Warwickshire wickets for only 23.
Cohen and Sam Conners both got lavish swing to restrict Warwickshire's lead to 308 but their hopes quickly faded as Hannon-Dalby removed both openers in the first five overs.
Billy Godleman edged a good delivery to first slip, where Tim Bresnan took a sharp catch, and Luis Reece was caught down the leg side trying to pull.
Craig Miles delivered another body blow with the last ball before lunch when Brook Guest was caught behind off an inside edge.
Wayne Madsen and Ben McDermott briefly lifted the spirits of the home supporters before the wheels came off again with four wickets falling for eight runs in five overs.
Will Rhodes brought himself on at the Racecourse End and was immediately rewarded when Madsen gave him a return catch off a leading edge and in the nex over, Hannon-Dalby returned to pin Matt Critchley lbw.
McDermott went in his next over when he pushed forward and edged low to third slip and Alex Hughes was beaten by a full, swinging delivery from Rhodes.
Warwickshire turned to the left-arm spin of Danny Briggs for the first time in the match and he struck with his third ball when Cohen pushed forward and was stumped.
Anuj Dal drove and cut Liam Norwell for two fours before he edged to third slip and a 21 point victory was sealed when Ben Aitchison skied Briggs to mid off.
