|LV= County Championship Division Two, Southport|
|Derbyshire 370 & 166: Slater 58, Lilley 5-23, Kerrigan 4-80|
|Lancashire 551: Prince 230|
|Lancashire won by an innings and 15 runs|
|Derbyshire 6 pts, Lancashire 24 pts|
Simon Kerrigan and Arron Lilley bowled Division Two leaders Lancashire to an innings victory over Derbyshire.
Derbyshire began the final day on 123-3, 58 runs behind, but collapsed during the morning session at Southport.
Spinners Kerrigan (4-80) and Lilley (5-23), who claimed a maiden five-wicket haul in only his third first-class game, took all seven wickets.
Only Hashim Amla and David Wainwright made it into double figures for the visitors, who were bowled out for 166.
Derbyshire had been 119-1 on the third evening, but the late dismissals of Ben Slater (58) and Chesney Hughes (41) gave Lancashire the impetus for a victory push.
Lilley started the collapse, bowling Tom Taylor and then having Scott Elstone caught by Ashwell Prince after the batsman mistimed a sweep shot.
Left-armer Kerrigan beat Amla's forward defensive shot to bowl the South Africa Test captain for 11 and then forced Shiv Thakor to edge to Alviro Petersen at slip.
Wainwright, attempting to cut a ball through point, was caught behind off Lilley for 10 and Kerrigan ended Harvey Hosein's obdurate innings, the teenage wicketkeeper making five from 47 balls before being bowled.
Lilley wrapped things up with his fifth wicket of the innings, bowling last man Mark Footitt as he attempted to launch the off-spinner over long-on, to secure a maximum 24 points for Lancashire.
Helped by Prince's superb double century in what proved to be their only innings of the match, the Red Rose county won for the fourth time in six Championship outings this season.
Meanwhile, Derbyshire suffered a third loss in five matches.
|Lilley breaks new ground|
|Arron Lilley hit 63 in Lancashire's innings for his first half-century in first-class cricket, and followed that up with a maiden five-wicket haul in Derbyshire's second innings.|
Lancashire director of cricket Ashley Giles: "That was a really good win after losing the toss on a wicket we thought would spin.
"It was a really ruthless performance. I've probably complained at times that we've not been ruthless enough but throughout this game I thought we've handled ourselves really well and we've played some really good cricket.
"I love the game when there's two spinners involved for personal reasons as much as anything. The game moved very quickly and when the ball's turning, it's good cricket to watch."
Derbyshire performance director Graeme Welch: "I thought it was a good game of cricket. If we'd have scored another 70 or 80 in the first innings, we'd have been bowling last on that pitch and you never know.
"It was always going to be difficult on the final day. It was a worn pitch and they had two quality spinners in Simon Kerrigan and Arron Lilley, who both came to the party.
"It just showed how difficult it was to play out there when one of the best batsmen in the world [Amla] is struggling with the spin and bounce."