|Royal London One-Day Cup, Emirates ICG|
|Durham 247-8 (50 overs): Richardson 56, Muchall 43 not out; Durston 1-19|
|Derbyshire 192 (46.5 overs): Madsen 77; Hastings 4-24|
|Durham won by 55 runs|
Holders Durham face an anxious wait to see if they qualify for the One-Day Cup quarter-finals despite beating Derbyshire in their last group game.
Mark Richardson's 56, unusual in that it only contained one boundary, laid the foundation for their 247-8.
But an unbroken ninth-wicket stand of 65 between Gordon Muchall (43) and Chris Rushworth (38) proved crucial.
Wayne Madsen made 77 for Derbyshire, but they were all out for 192 to lose by 55 runs as John Hastings took 4-24.
|Colly joins elite group|
|Paul Collingwood is only the fourth player to score over 10,000 runs, take over 200 wickets and 200 catches in limited-overs cricket (not T20) - the other three are Graham Gooch, Sir Viv Richards and Carl Hooper.|
The victory kept Durham in fourth place in Group A, but Northants can leapfrog them if they beat Yorkshire at Headingley on Tuesday.
Paul Collingwood's side were rarely fluent with the bat, as typified by Richardson's innings, in which he did not reach the rope until after he had completed his half-century.
However, Muchall and Rushworth's partnership was a new List A record for the county, beating the stand of 62 between Graeme Bridge and Mark Davies against Leicestershire in 2002 - although Rushworth was dropped three times.
Collingwood himself made 33, which he followed with figures of 2-37 in support of Australian paceman Hastings, and his 200th limited-overs catch to send opener Wes Durston on his way for 38.
Derbyshire slumped to 71-4 and although they still had a chance while Madsen was at the crease, he was caught behind off Hastings as the last five wickets went down for 29 runs in seven overs.