Gloucestershire 163 (Reece 7-20) and 179 for 8 (Howell 58, Ferguson 4-56) beat Derbyshire 184 (Reece 59, Miles 5-50) and 157 (Hughes 55 *, Higgins 3-17, Miles 3-46) for two wickets
Craig Miles signed his career in Gloucestershire by hitting the winning races to secure a two-inning victory on a pulsating third and final day of the tournament . Division Two game against Derbyshire in Derby.
Miles, who will join Warwickshire next season, danced across the field to hit the winning limit while Gloucestershire survived a final collapse to reach its goal of 179.
Benny Howell seemed to have Won the game with 58, but four terrains fell by 20 races before Miles resolved the contest with the borders of Matt Critchley.
Derbyshire looked like a light favorite at the start of another glorious autumn morning, but night watchman George Drissell set the tone for a determined batting display by surviving the first 10 overs.
Drissell showed good judgment and temperament until he drove freely with Tony Palladino and was lbw for 16, but the fast terrain that Derbyshire needed did not arrive.
The pitch seemed to have diminished, but Howell battled confidently from the start, although Palladino should have knocked out Miles Hammond when the starter took him into the midfield, where Lockie Ferguson squandered the opportunity.
Hammond only made another four races but, crucially, they were eight more overs before Derbyshire pulled him out and by then, Howell set and found the gaps.
He drove Palladino through the covers for four and lit the sealer for another limit and the target was below 100 when Hammond edged Hardus Viljoen's unit to slide for the first time.
Gloucestershire needed only 64 at lunch and Howell started the afternoon session by driving Palladino twice straight to the limit to reach 50 from 49 balls.
Derbyshire finally turned to the turn of Critchley's leg and made the advance on his second turn when Howell hit a drive to point out where Alex Hughes had a big catch.
Ben Charlesworth poked Critchley in the middle of the four, but he was playing a leg jump and Gloucestershire was nervous. when Ryan Higgins played an advantage against Lockie Ferguson and was caught and drugged.
Jack Taylor cut Ferguson off the edge of midfield and led him to the third man by four, but was brilliantly trapped by Billy Godleman with 10 needed.  But Miles had the last word, taking Critchley on all fours before taking him back to the head to complete an exciting victory.