|LV County Championship Division One, Liverpool|
|Close of play, day two: Lancashire 327-8 Yorkshire 141|
|Lancs 6pts, Yorks 2pts|
Paul Horton and Mark Chilton both hit half centuries as Lancashire strengthened their grip on the Roses match at Aigburth.
Lancashire resumed day two on 56-1 but had established a lead of 186 by the time they closed on 327-8.
Horton hit 93 before falling to Adil Rashid, while Chilton weighed in with 77, including adding 90 for the fourth wicket with Steven Croft (41).
Farveez Maharoof also contributed a useful 34 as Yorkshire's attack toiled.
It was Horton's highest championship score for 13 months, when he scored 123 against Essex last April, and he shared 81 for the third wicket with Chilton.
Horton, whose 50 came off 99 balls, was dropped by wicketkeeper Simon Guy off Rashid on 73, but the same combination finally accounted for him seven runs short of his century to leave Lancashire 150-3.
When Chilton reached his fifty off 124 balls in the 73rd over, Lancashire were still six runs away from their first batting point but he fell to the second new ball when he edged Moin Ashraf to Adam Lyth at first slip.
Joe Root then forced Croft to chop on for 41 and trapped Gareth Cross lbw for a golden duck as Lancashire slumped from 240-3 to 244-6.
Sri Lankan Maharoof steadied the ship with Luke Procter (23 not out) but was bowled by Ryan Sidebottom, who also pinned home captain Glenn Chapple leg before with a full toss just before the close, but not before Chapple became only the fifth man to take 700 wickets and score 7,000 first-class runs for Lancashire.