Warwickshire County Cricket Club were beaten by four wickets at Durham in a Royal London Cup One Day tie.
Warwicks batted first at Gosforth and had Sam Hain hit 107 from 115 balls.
Tim Ambrose added 86 as Warwicks made 292-7 from their fifty overs.
Durham came in and had Stoneman make 56, Borthwick 66, and Paul Collingwood 53 as they reached the total with fourteen balls to spare.