Yorkshire claimed a thrilling fourth win of the campaign over Warwickshire at Headingley as Steve Patterson and Matt Fisher starred with the bat to help them take a giant step towards Specsavers County Championship safety.Bears off-spinner Jeetan Patel (six for 50) claimed his first five-wicket haul of the season to go with his first-innings century as the White Rose slipped to 96 for seven before lunch in pursuit of a 175 target.