David Wainwright marked his Derbyshire debut with a career-best performance to carry his new county to an emphatic 202-run victory over Northamptonshire.
The left-arm spinner, a winter signing from Yorkshire, took 6-33 from an unbroken spell of 26 overs as the visitors were bowled out for 134 after being set 337 to win from a minimum of 72 overs.
The home side had been in control of the contest at the start of the day with a lead of 235, and the opening pair took their stand to 224 before Martin Guptill skied a pull to deep square leg and was caught for 137.
The only disappointment for the home side was that Paul Borrington failed to reach a maiden LV= County Championship hundred when he fenced at Lee Daggett and edged to slip two runs short of the mark.
Dan Redfern and Wes Durston added quick runs before the declaration came at 314-3 and the morning session ended with a big wicket when Northamptonshire opener Stephen Peters was lbw to Mark Footitt off the last ball before lunch.
Rob Newton, who made 58, and Alex Wakely looked to be steering Northamptonshire towards calmer waters but they both fell either side of tea after surviving for 20 overs.
Durston had the last word when he beat Daggett's forward lunge to spark off wild celebrations among the Derbyshire fielders, who had launched their season with the county's second biggest win over Northamptonshire.
Martin Guptill stroked a century as Derbyshire's openers seized the initiative on day three of their County Championship opener against Northamptonshire at the County Ground.
The New Zealander's unbeaten 131 helped Derbyshire reach 213-0 in their second innings by the close, an overall lead of 235.
Guptill made a cautious start before accelerating to hit 12 fours and a six in his 192-ball contribution. He was given solid support from opening partner Paul Borrington, who finished on 66 not out off 226 balls.
Northants missed three catches to break the stand, Alex Wakely dropping both batsmen in the slips, Guptill on 43 and later Borrington on 42.
Guptill got another life on 108 when substitute fielder Con de Lange put down a steepling chance down at midwicket.
At the start of the day, Northants went from 241-7 in their first innings to 264 all out in less than 10 overs. Derbyshire seamer Tony Palladino took the final two wickets in successive overs to complete figures of 3-60.
Alex Wakely frustrated Derbyshire's bowlers with a defiant fifty for Northants on a hard-fought second day at the County Ground.
Wakely scored 62 in four hours and with Niall O'Brien, who also made 62, rescued the visitors after they had slipped to 69-4 replying to Derbyshire's 286.
James Middlebrook continued the fightback with an unbeaten 40 before bad light forced an early close with Northants on 241-7, leaving the game in the balance.
Northants had started another chilly day in a precarious position on 28-3, 258 behind, and Wakely and David Sales concentrated on blunting the Derbyshire seam attack which tended to bowl too wide in the first hour.
Sales was on 15 for 38 balls before he finally lost concentration and edged a drive at Ross Whiteley low to third slip where Dan Redfern took a fine catch.
But that was the home side's last success for 35 overs as Wakely and O'Brien dug in to add 78 in gloomy conditions to get Northants back into the contest.
Dan Redfern celebrated a double first while leading an impressive Derbyshire fightback on the first day of the County Championship season against Northamptonshire at Derby.
The 21-year-old left-hander scored his maiden first-class century and also achieved the honour of becoming the first batsman to make a hundred in the 2012 season.
Ross Whiteley (83) shared a stand of 160 in 39 overs with Redfern, who made 110, following a fine spell from Jack Brooks which reduced the home side to 50-4 after Northants had won the toss.
Whiteley finally fell to Brooks, who finished with 5-61, as Derbyshire were bowled out for 286 but Northants slipped to 28-3 to trail by 258 at the close.
Derbyshire ended the day on top as Tony Palladino (1-11), who broke his jaw less than three weeks ago, had Rob Newton caught at second slip for a duck before Tim Groenewald (2-10) removed Stephen Peters (4) and Kyle Coetzer (10) in consecutive overs.