County Championship previews - Telegraph Sussex v Durham Hove Sussex welcome back all-rounders Luke Wright and Chris Jordan from one day international duty with England. Pakistan slow left-armer Ashar Zaidi, signed from Lancashire League club Accrington two weeks ago, retains his place. Champions Durham need 16 points to break the record haul since the championship was split into two divisions. They have added off-spinner Ryan Buckley to the side that routed Nottinghamshire. Surrey v Yorkshire The Oval Relegated Surrey have called up seamers Tom Jewell and Matthew Dunn for possible first championship appearances of the season. Batsman Jason Roy, who last played in the championship in June, is also in the squad but the injured Stuart Meaker misses out. Runners-up Yorkshire have added left-arm seamer Karl Carver to their squad for a possible senior debut. Batsman Alex Lees and all-rounder Richard Pyrah are also in a 14-man squad. Glamorgan v Gloucestershire Cardiff Glamorgan have recalled all-rounder Graham Wagg in place of John Glover in the only change to the squad for last week's draw with Essex. Hamish Marshall, who needs 36 runs to reach 1,000 for the season, captains Gloucestershire in the absence of Michael Klinger, who has returned to Australia. Ian Cockbain is set to make his first championship appearance of the season. Wicketkeeper Cameron Herring and off-spinner Tom Shrewsbury are recalled. Hampshire v Essex Southampton Essex, who need to win and hope that Northamptonshire fail to collect five points at Worcester if they are to sneak promotion, are set to give a senior debut to England Under-19 batsman Kishen Velani. Batsman Tom Westley and seamer Sajid Mahmood are recalled. Hampshire welcome back England batsman Michael Carberry from one-day international duty for a match that will be last umpired by their former all-rounder Trevor Jesty before he retires after 20 years on the first-class list. Kent v Lancashire Canterbury Kent will give a debut to Matt Hunn, a 19-year-old seamer from Suffolk, in place of the experienced Charlie Shreck. Former Zimbabwe seamer Kyle Jarvis is set to make his debut for second division champions Lancashire in place of Glen Chapple, who has an Achilles tendon injury. All-rounder Jordan Clark, who has yet to make his championship debut, is in the squad along with slow left-armer Stephen Parry, who has recovered from a broken forearm. Worcestershire v Northamptonshire Worcester Northamptonshire, who need five points to secure promotion, will give a late fitness test to all-rounder David Willey (back). Slow left-armer Graeme White and seamer Luke Evans join the squad but seamer Lee Daggett misses out. Worcestershire have added paceman Chris Russell, who has not played in the championship for three months, to the side that drew with Hampshire two weeks ago.