Yorkshire completed a four wicket win on day four at Richmondshire CC.
Claiming the final three Durham wickets, Yorkshire required 113 to win with a much-changed Yorkshire side playing due to T20 call-ups and the Test Match.
Yorkshire moved to their target in 34.2 overs with four wickets in hand.
Yorkshire County Cricket Club can confirm that Harry Duke will join Middlesex once his current contract runs out in October.
Four Yorkshire players have been named across a 15-player squad and non-travelling reserves ahead of the England Women U19's biggest ever winter programme of cricket that will culminate in an ICC U19 Women’s T20 World Cup in Nepal and Bangladesh.
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