Yorkshire suffered a 37-run defeat to Derbyshire at Headingley in a game overshadowed by the impending retirement of Michael Vaughan.
The former England captain, who was not picked by the hosts for the dead rubber, will hold a press conference on Tuesday when he's expected to announce he is to end his playing career.
In Vaughan's absence the Tykes suffered another batting collapse on their way to a fourth successive defeat in this year's Twenty20 Cup, a miserable run that means they will be in Division Two of the new P20 tournament next season.
Looking to overhaul Derbyshire's total of 164-7, Yorkshire were 68-1 at one stage before collapsing to 127 all out.
Andrew Gale made 26 at the top of the order alongside Jacques Rudolph (24), while skipper Anthony McGrath chipped in with 29 on his return from injury.
However, Jake Needham sparked a collapse with three wickets in four balls on his way to impressive figures of 4-21.
Stuart Law then picked up the last two wickets in as many balls in his first over in Twenty20 cricket, only being denied the chance of a hat-trick due Gerard Brophy being absent hurt with a hand injury.
Derbyshire had been indebted to a 57-run stand between Wavell Hinds, who finished on 49 not out, and Garry Park (42).
The pair picked up the pace for the visitors after they had suffered a mid-innings wobble following a quick-fire 37 from 23 deliveries by skipper Chris Rogers at the top of the order.
Despite their convincing victory, Derbyshire still finished bottom of the North Division table.