Derbyshire's impressive start to the season continued as they crushed Glamorgan by eight wickets with a day to spare at Derby.

Glamorgan's fragile batting failed again with only Will Bragg offering any resistance with 78 as they collapsed to 188 all out in their second innings against the spin of David Wainwright, who took five for 51, and Wes Durston's three for 43.

That left Derbyshire needing only 70 and they took less than 13 overs to seal a 23-point victory which leaves them on top of Division Two and Glamorgan rooted to the bottom.

The visitors' chances of making a fight of it looked good when they wiped out Derbyshire's lead of 119 with only three wickets down but they crumbled on a pitch taking turn and lost their last seven wickets for only 65 runs.

Derbyshire had also lost cheap wickets in the morning when the pace of Hugh Waters and Simon Jones ran through the tail leaving skipper Wayne Madsen stranded on 130 not out.

The home side were already 99 in front but they lost the last five wickets for 19 in nine overs to set the tone for a day of bowling domination.

Jones got some lift to remove Wainwright in the second over of the day and Waters belatedly got his reward for a wholehearted performance by quickly removing Jon Clare and Tom Poynton.

Waters knocked over the injured Mark Footitt who batted with a runner to finish with three for 78 but Glamorgan were soon in trouble when both openers went before lunch.

Tim Groenewald struck twice in his third over by pinning Gareth Rees in front and knocking out Nick James's off stump when he offered no shot to reduce the visitors to six for two and Durston struck a big blow when Marcus North edged a drive to slip when on 21.

However, Bragg and Ben Wright appeared to be putting their team back in the game when they added 66 in 18 overs, but when Wainwright and Durston removed them in successive overs, Derbyshire scented victory.

Mark Wallace made 29 before he edged a drive at Wainwright, who took four of the last five wickets, the final one thanks to a stunning one-handed catch at cover by Madsen.

The only question was whether Derbyshire could wrap up victory before the close but Martin Guptill with 30 from 23 balls and an unbeaten 21 from Paul Borrington ensured the home dressing room was celebrating a third Championship win before 6pm.