Chris Whelan took 4-21 as Worcestershire prevailed by 15 runs against Derbyshire.
Worcestershire seamer Matt Mason lasted just six overs on his comeback from a rib injury.
Worcestershire are fighting to keep paceman Chris Whelan, after Kent made a move to sign the youngster.
Lancashire overhauled a target of 122 to complete a six-wicket victory over Worcestershire with a day to spare at New Road.
Tri-Series in Australia 2015
Australia win by 112 runs
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.