Michael Lumb struck a fine half-century as Nottinghamshire claimed a seven-wicket Duckworth-Lewis victory over Warwickshire in their Yorkshire Bank 40 clash at Edgbaston.
Warwickshire set a weather-affected total of 186-7 after being put in to bat by the Group A leaders in a contest which was reduced to a planned 30 overs each due to the interruptions.
Lumb (57) made a blistering start to the chase before another rain delay led to the revised target of 194 being reduced to 133 in 21 overs, with James Taylor (39 not out) helping Nottinghamshire comfortably over the line.
Warwickshire's total, based around Rikki Clarke's first one day half century in a year, looked competitive - but Lumb soon made it look inadequate as he contributed 43 to an opening stand of 52 with a subdued Alex Hales 98).
Lumb raced to a 28-ball half century but then failed to dig out a yorker from Steffan Piolet's first ball, but his innings left the Outlaws well ahead of the require rate.
Samit Patel (14) holed out to deep square in Boyd Rankin's first over just before umpires Neil Bainton and Steve O'Shaughnessy took the players off for rain, but on the resumption Taylor finished the job that Lumb had started.
Warwickshire's innings was twice interrupted early on by hailstorms which meant that the match was reduced first to a 37 overs contest and then to 30 overs after a second and more lengthy stoppage.
Warwickshire stuttered as Varun Chopra struggled to time the ball but Clarke got the innings going after he was promoted up the order by lifting Patel for six over long on.
Chopra grafted for his 42 before he went lbw sweeping Steve Mullaney but Clarke was more fluent and reached a 42-ball 50 in the penultimate over of the innings.
Clarke, who was bowled pulling Jake Ball for 59, was given spirited support by Tim Ambrose (21) and Piolet (22), who provided late acceleration with unselfish cameos, but Warwickshire were still left seeking their first win in this season's competition.