County championship round-up: Northamptonshire dominate Surrey while Sam Cook takes landmark wicket as Essex skittle Yorkshire

Emilio Gay hits fine century as Northamptonshire dominate Surrey; Sam Cook reaches 200 first class wickets as Essex bowl out Yorkshire; Lewis Gregory half-century crucial as Somerset fight back against Warwickshire 

Emilio Gay scored a fine century as Northamptonshire dominated LV=Insurance County Championship title-chasing Surrey on day one.

Opening batter Gay was fantastic in his 145, his third first-class century and second of the season, as he helped his side seamlessly score 249 for four having been stuck in to bat.

He was joined in a 77-run first-wicket partnership by Will Young and a 155-run fourth-wicket stand by Rob Keogh, with a Kemar Roach and Dan Worrall-induced wobble in between.