Friends Provident Trophy - Group D
Lancashire 296-8 (F du Plessis 112, T C Smith 59, G M Smith 4-53) v Derbyshire 175 (C J L Rogers 68, G Keedy 4-43)
Lancashire beat Derbyshire by 114 runs (D/L Method)
Lancashire moved to the brink of the FP Trophy quarter-finals with a 114-run victory against Derbyshire under the Duckworth-Lewis method.
Francois du Plessis scored his first hundred for Lancashire, a brilliant 112 off only 86 balls, and although Greg Smith took a career-best 4-53 a total of 296-8 always looked beyond the Phantoms.
Skipper Chris Rogers responded with 68 from 72 balls but left-arm spinner Gary Keedy scalped 4-43 as the hosts were dismissed for 175 under the Derby floodlights.
Derbyshire began brightly as, after Rogers won the toss and elected to field, left-arm medium pacer Graham Wagg knocked over Paul Horton and Ashwell Prince.
Du Plessis, however, played a magnificent innings to put his side on course for a formidable total. The South African timed the ball sweetly to race to a century, which contained 12 fours, off only 76 balls.
He added 95 in 16 overs with Tom Smith and, with the Lightning on 161-2 in the 30th over, a total in excess of 300 looked possible.
But Smith's run-out for 59 allowed the hosts to exert a measure of control.
The off-spin of Greg Smith and medium pace of Garry Park applied the brake with Steven Croft and former Derbyshire captain Luke Sutton falling in consecutive overs.
Kyle Hogg and Du Plessis put the innings back on course with a sixth-wicket stand of 49 in seven overs but Smith had them both caught in the deep off successive balls to reduce the visitors to 238-7 in the 44th over.
At that point, Lancashire were in danger of falling short but Mark Chilton, who had retired hurt with a bruised right elbow, returned to supervise a late flourish that put them in charge.
Chilton hit Wagg for three consecutive fours and Sajid Mahmood drove Smith for the only six of the innings as 53 came from the last six overs.
Lancashire allowed the Phantoms run chase to get off to a flyer by bowling too short and Rogers and Smith took advantage before Hogg moved one back to have Smith lbw for 16 in the eighth over.
There was a big wicket three overs later when former Lancashire star Stuart Law miscued a pull at Smith on four and lobbed a catch to mid-on.
But Rogers was playing superbly in only his second innings of the season following problems with his visa application and reached his fifty, which included 10 fours, off 58 balls.
After 20 overs, Derbyshire were 98-2 but their hopes were dealt a big blow when Rogers checked another pull at the slow left-arm spin of Keedy and was caught and bowled off a leading edge.
Rain then stopped play briefly, leaving the home team to chase a revised target of 290 in 48 overs but Keedy quickly snared Wavell Hinds and Dan Redfearn and, although Wagg drove him for a big six, the Phantoms came up well short.
The win puts Lancashire top of Group D with 10 points, while Derbyshire have four points and need to win their last three games to have any chance of making the last eight.