Somerset made it three wins out of three in the Royal London One-Day Cup after beating previously undefeated Sussex by 68 runs on Duckworth-Lewis-Stern at Hove.
Chasing Somerset's 283 for eight, Sussex were 62 for four from 16.3 overs when rain arrived at 4pm.
Somerset's win was set up by solid contributions from Azhar Ali (68), James Hildreth (81) and Lewis Gregory (50).
Hildreth, who became Somerset's record appearance-maker across all formats, said: "It's another good win and performance and it's nice to keep the unbeaten start going.
"We've won five out of five (in all competitions) and we back ourselves to keep going, everyone is contributing at different times."
Billy Godleman scored a second century in consecutive innings as Derbyshire pulled off an exciting last-ball victory against Leicestershire.
With six needed to win off the final two balls, Leus Du Plooy pulled Leicestershire left-arm seamer Dieter Klein to the long leg boundary before pushing the final delivery back past the bowler.
Non-striker Matt Critchley, who had not faced a ball after coming in when Godleman was run out off the third ball of the final over, completed the necessary second run by diving to make his ground.
Godleman's 106, made from 115 balls, means Derbyshire's captain has now scored 309 runs in the competition this season in just three innings.
Leicestershire made 312 for eight from their 50 overs and, after the rain came, Derbyshire's 266 for three saw them win by seven wickets on DLS.
Lancashire's Saqib Mahmood returned a career best six for 37 as Northamptonshire were bowled out for 269 in 50 overs.
Openers Haseeb Hameed and Keaton Jennings then hit 65 and 63 respectively on the way to 164 for two in the 29th over when rain arrived, with Lancashire winning by 45 runs on DLS.
Durham suffered their first defeat of the campaign as Ross Whiteley and Ben Cox guided Worcestershire to a four-wicket DLS success.
Cox (31 not out) and Whiteley (26) tipped a see-saw contest in favour of Worcestershire with a half-century stand for the sixth wicket before a four-wicket DLS victory was completed with 10 balls to spare.
