Yorkshire 416 for 6 (Wharton 188, Tattersall 93*) lead Derbyshire 76 (Fernando 5-30, Thompson 4-31) by 340 runs
James Wharton and Jonny Tattersall shared a record-breaking stand before rain frustrated Yorkshire on the second day of the Vitality County Championship match against Derbyshire at Chesterfield.
The pair shared a partnership of 241, Yorkshire's highest for the sixth wicket against Derbyshire, as the visitors moved to 416 for 6 when play was abandoned shortly before 4.30pm
Wharton faced 241 balls for his career-best 188 which contained 23 fours and six sixes with Tattersall 93 not out off 151 balls to give Yorkshire a lead of 340.
Yorkshire had been unrelenting with the ball on day one and there was no respite for Derbyshire as Wharton and Tattersall batted through a rain-shortened first session.
With Derbyshire bowling spin from both ends to improve their over-rate, they did much as they pleased to eclipse a record which had stood for more than a hundred years.
Wharton twice dispatched the leg spin of Mitch Wagstaff for six and after surviving a difficult chance to deep cover on 147, he reached 150 off 180 balls, 104 of them coming in boundaries.
Tattersall's contribution was not as eye-catching but was just as valuable in putting Yorkshire into a near impregnable position and the pair eased past the county's previous highest sixth wicket stand against Derbyshire of 178 set by Emmott Robinson and Cecil Burton in 1921.
Derbyshire eventually claimed a second new ball after 89 overs and after Wharton drove Daryn Dupavillon through the covers to bring up the 400, rain brought another prosperous session for the visitors to a close.
When play resumed after lunch, Dupavillon finally broke through by having Wharton caught at second slip for the 12th highest individual score against Derbyshire in Yorkshire's history.
He departed to a standing ovation and warm congratulations from the Derbyshire fielders who recognised how well he had played in far from straight-forward conditions.
Jordan Thompson announced his intentions by hitting two fours before more rain stopped play with Tattersall seven short of a century.and that proved to be the final action on a day when only 35.1 overs were bowled.
