Adam Lyth's first century of the season helped Yorkshire dominate the opening day of their LV= County Championship clash with defending Division One champions Durham.
Opener Lyth made the most of being dropped on 88 at second slip to go on and reach three figures at Emirates Durham ICG, the visitors closing on 299-3 after winning the toss and choosing to bat first.
Kane Williamson nearly made it two centurions for the Tykes until he was clean bowled by Chris Rushworth for 97. James Harrison picked up the other two wickets to fall, including Lyth to end a second-wicket partnership of 179.
However captain Andrew Gale - back leading Yorkshire after leaving himself out for the loss to Middlesex to allow Joe Root to play - made an unbeaten 35 as he and the fit-again Jonny Bairstow (22 not out) kept the home bowlers at bay through to stumps.
Elsewhere in the top flight, Michael Yardy held Sussex's first innings together against Lancashire, the left-hander making an unbeaten 132 to see the visitors to 276-8 at Old Trafford.
The former England limited-overs international hit 10 fours during a 214-ball occupation of the crease having found himself out in the middle following the early loss of Luke Wells (five).
Skipper Chris Nash made 40 on his first appearance of the summer as he helped add 80 for the second wicket, though Sussex rather collapsed from a promising position of 97-1 to 176-7 in the 52nd over.
However James Anyon made 35 as he and Yardy put on 74 for the eighth wicket. The former was eventually bowled by Tom Smith, who was the pick of the Lancashire attack with figures of 3-69.
At Taunton, Samit Patel pushed his claims for an England recall with an unbeaten century of his own as Nottinghamshire piled on 382-5 against Somerset, while Chris Read weighed in with 95 not out.
Lewis Gregory continued his fine start to 2014 with three wickets, including removing well-set duo Phil Jacques (65) and James Taylor (60), but the home team toiled in the final session.
Patel - who hit 20 boundaries to make it to stumps with 116 to his name - and Read combined in an unbroken alliance worth 188 that carried Nottinghamshire towards maximum batting points, a fine effort considering they had been inserted by Somerset skipper Marcus Trescothick.
While bat dominated ball at most grounds on Sunday, 14 wickets fell at Edgbaston. Having bowled Middlesex out for 167, Warwickshire managed to reach 123-4 in reply, putting them on course for a first-innings advantage.
Debutant Sam Hain made 42 for the Bears before becoming a third victim of the day for Toby Roland-Jones (3-28). The seamer had also dismissed Varun Chopra and Laurie Evans, while Neil Dexter accounted for Ian Westwood.
Steven Finn went wicketless but did make an impact with the bat, the no 11 top-scoring with 37 not out in a Middlesex innings that lasted 43.5 overs. Chris Rogers made 34 and Ollie Rayner 31 but Chris Wright's 4-56 put Warwickshire in control.