Michael Cohen claimed his maiden five-wicket haul for Derbyshire, but it could not prevent them from a 191-run defeat to Warwickshire at The Incora County Ground.
The 22-year-old quick took 5-43, while Sam Conners achieved his best match figures of 7-87, throughout a good bowling performances, although the batting in both innings prevented the hosts from getting a positive result.
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 4-24.
The home side had a chance when they bowled Warwickshire out for 155, 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 One 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’s 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.
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