Yorkshire made a mockery of their top-of-the-table spot when they were skittled out for 93 by Leicestershire and suffer a crushing defeat by eight wickets with 17.4 overs remaining, the game being over by 6pm.
Yorkshire simply could not cope with a seaming pitch on which all the opposition bowlers performed well, and they just managed to get above their lowest 40-overs score against Leicestershire of 89 for nine, made at Grace Road in 1989.
The pitch - another Heading-ley shocker for a one-day match - eased to some extent when Leicestershire batted, but Phil Simmons and Vince Wells att-acked from the start with a 53 opening stand in only 11 overs to put the issue beyond doubt.
It turned out to be a bad omen when David Byas called correctly for the first time, and continued Yorkshire's seven-match sequence from the start of the season of batting first.
Within a dozen overs, the first half of the team had been swept aside for only 25 by James Ormond - a young fast bowler with the physique and a passing resemblance to Fred Trueman, assisted by Chris Lewis and Wells.
First to go was Matthew Wood for a duck on his Sunday debut after receiving a lethal ball from Ormond which seamed away to touch the edge, and Byas followed to a well-judged boundary catch by Ormond at third man when he top-edged a hook off Lewis.
Craig White, Michael Vaughan and Anthony McGrath all failed miserably to avoid contact with slow seamers, and it was left to Richard Blakey, at No 7, to save Yorkshire from complete humiliation.
Bradley Parker stayed with him for a while until cutting Wells to backward point after helping to more than double the score, and there was further resistance from Gavin Hamilton, who hit two boundaries and ran a four before looking aghast to be given lbw by umpire Ray Julian pushing forward.
Blakey had survived 71 balls for his 29 when he attempted to cut Lewis and was well caught at slip by Simmons, and the tail was polished off by Dominic Williamson, Paul Hutchison being last out after defying Leicestershire for 29 deliveries while making a single.
Williamson just failed to take a hat-trick, getting rid of Hamilton and Silverwood with consecutive balls and then seeing Blakey's cut land a fraction short of Simmons at backward point.
Wells, who, with a combination of lucky edges and sumptuous cover drives, had slammed 38 off 37 balls with five fours when he helped a ball from Hamilton into Blakey's gloves.
Yorkshire's championship match against Leicestershire ended in a draw at Headingley on Saturday when rain wiped out the final day.
Yorkshire fast bowler Gavin Hamilton is likely to let Scot-land's director of cricket Jim Love know today if he will take up his country's invitation to play for them in next year's World Cup.
Hamilton is expected to pass on his decision to Love at the Harrogate Cricket Festival today, where Scotland are meeting an International XI in the first semi-final of the Costcutter Cup.
Hamilton has David Byas's support, and is likely to say 'yes', particularly if Scotland agree not to play him in the Common-wealth Games this September, so allowing him to play out the season with Yorkshire.
The International XI have replaced Yorkshire, who have had to pull out because of tomorrow's Benson and Hedges Cup semi-final against Essex at Headingley.
The second semi-final between Hampshire and Northampton-shire takes place at St George's Road tomorrow, with the final on Wednesday.
Yorkshire's committee have decided by a narrow majority not to grant a benefit next year to their cricket development officer and former manager Steve Oldham.
Converted for the new archive on 30 June 2000. Some images and formatting may have been lost in the conversion.
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