Alex Lees scored an unbeaten century to lead Yorkshire to a commanding 215-2 against Middlesex on the opening day of their LV= County Championship match.
The game was shortened by persistent drizzle and bad light at Lord's which stopped play four times.
But that didn't worry Lees who was making only his third appearance by showing sound temperament as well as a solid technique by reaching his century in the penultimate over in dazzling sunshine.
He had been batting more than four and a half hours and faced 221 balls when he swept off spinner Ollie Rayner nervelessly for his 11th four to complete his second first-class hundred.
Middlesex must have fancied their chances against a Yorkshire side missing their England trio of Joe Root, Jonny Bairstow and Tim Bresnan as well as Gary Ballance (virus), Jack Brooks (broken thumb) and Moin Ashraf (stiff back).
They did not mind bowling first, either, after Yorkshire won the toss and chose to bat in overcast conditions but they were to be denied by Lees, who made 121 against Leeds/Bradford University earlier in the season but had managed only 12 runs in his three previous championship innings.
A powerfully-built, 6ft.3in. left-hander from Halifax, he withstood a thorough examination from Tim Murtagh and Corey Collymore with the new ball, applied himself diligently and received his due reward.
Yorkshire had lost Adam Lyth for 11, caught low down at first slip off Murtagh, at 32 and Phil Jaques (20), caught behind off Gareth Berg, at 70 but Lees got all the support he needed from Andrew Gale, his captain, in an unbroken third-wicket partnership of 145 in 53 overs.
It made it a chastening day for Middlesex, who began the game joint second with Yorkshire, only five points behind first division leaders Sussex.
They had further cause for concern when James Harris pulled up with a side strain in his fifth over.
Curiously he stayed on the field, presumably so he will be able to bowl straightaway if his condition improves overnight.