Gary Ballance’s brilliant 174 has helped Yorkshire strengthen their grip on this LV= County Championship match against Northamptonshire at Headingley, which has reached lunch on day two.

Yorkshire, whose innings has included a joint world record eight lbw in a first-class innings, declared on 459-9.

Ballance and Ryan Sidebottom advanced their eighth-wicket stand to 72 inside 24 overs, the second highest partnership of the innings, after Yorkshire started the day on 328-7.

Steve Patterson and Jack Brooks also added an unbroken 61 inside eleven overs for the tenth wicket before Andrew Gale declared.