Cumberland began their defence of the MCCA Trophy with a six-wicket win over Cambridgeshire at Wisbech.
Fifties from former Derbyshire batsman Garry Park and James Williams lifted the hosts to 232 for nine from their 50 overs, but Jonathon Miles and Liam Livingstone matched those efforts as victory came with three overs spare.
Elsewhere in Group Three in the opening round of games, Herefordshire comfortably beat Cheshire by seven wickets at Brockhampton thanks in part to to 4-28 from Dan Conway limiting the latter to 147 all out.
In Group One Oxfordshire edged out Devon by one wicket at Bovey Tracey, overhauling 167 on the back of Damian Shirazi’s unbeaten 74.
In Group Two Shropshire chased 262 to beat Lincolnshire by six wickets at Shrewsbury despite 97 from another Derbyshire batsman, Matt Lineker.
Norfolk defeated Wiltshire by 91 runs at Devizes, Chris Brown and Harry Bush each taking five wickets as the latter were dismissed for 110.
In Group Four Wales Minor Counties were five-wicket winners over Dorset at Bournemouth, with 6-21 from Jack Murphy limiting the hosts to 166 for nine.
Michael Payne’s hundred and Shaftab Khalid’s five-for set up Buckinghamshire's 81-run victory versus Staffordshire, who mustered 200 all out at Stone.