Darren Pattinson and Luke Fletcher shared nine wickets as Nottinghamshire beat Warwickshire by 28 runs.
Northants will be without two of their key players for the start of the new domestic season.
Stephen Peters' 97 not out led Northamptonshire to a five-wicket victory over Warwickshire.
SA A v Eng Lions OD
England's lack of aggression and power with the bat is a concern heading into the World Cup, says David Lloyd.
Australia and New Zealand will co-host the 2015 Cricket World Cup from February - here's a taster of what's in store.
Michael Clarke must skipper Australia in the World Cup if they are to stand a chance of winning the trophy, says Shane Warne.
Sky Sports' cricket experts have picked their favourite hundreds from previous World Cups. Do you agree with their choices?
England's World Cup opponents will not relish the return of fit-again James Anderson, says Nick Knight.