Carberry misses Hampshire opener
Hampshire will be without Michael Carberry for their opening match of the LV= County Championship season against Durham at the Rose Bowl.
The left-handed opener expects to miss the first month of the season as he continues his recovery from a blood clot on the lung, although the hosts welcome back Simon Jones from injury and Friedel de Wet is set to make his debut.
While Phil Mustard returns to captain Durham, having recovered from a foot injury, Mark Davies is out of action for two months with a similar complaint.
Graham Onions continues his recovery from back surgery and young seamer Mark Wood is unavailable after tweaking a hamstring in the pre-season victory against Durham MCCU.
Although Lancashire will be unable to call upon Sri Lanka all-rounder Farveez Maharoof against Sussex at Liverpool as his arrival has been delayed, Oliver Newby has been named in a 13-man squad.
Sussex will be missing Mike Yardy, Luke Wright and Matt Prior, who are resting following their participation in the World Cup with England.
Although captain Yardy trained with the squad for the first time since flying home early from the sub-continent to receive treatment for depression, he is not considered ready to return to action. Murray Goodwin takes the reins in his absence.
Australian all-rounder Damien Wright is likely to make his debut for Worcestershire against Yorkshire at New Road, while Matt Pardoe can also expect to feature.
Yorkshire may hand a debut to 20-year-old batsman Joe Root should Anthony McGrath fail a late fitness test.
Adam Lyth and a fit-again Joe Sayers will almost certainly open the batting but there has yet to be confirmation whether Gerard Brophy or Jonathan Bairstow will be handed the wicketkeeper gloves.
Ravi Bopara is available for Essex when they take on Kent at Chelmsford after turning down the opportunity to join Rajasthan Royals in the Indian Premier League.
England team-mate Alastair Cook has been cleared to play by the ECB, while 17-year-old fast bowler Reece Topley, who played made his first-class debut against Cambridge MCCU last week, is included in the squad.
Kent may opt to play new loan signing Charlie Shreck as they look to bounce back from relegation last year.
Reigning champions Nottinghamshire and last year's runners-up, Somerset, begin their campaigns next week.
In Division Two, Australia batsman Usman Khawaja will make his Derbyshire bow at Bristol against Gloucestershire, who are set to hand debuts to Ian Cockbain, Will Gidman and Richard.
There could also be a place for young seamer Liam Norwell, but new signings Kane Williamson and Hamish Marshall are still in New Zealand.
South African Alviro Petersen takes charge of Glamorgan for the first time when they meet Leicestershire at Grace Road.
Surrey could field three debutants - Tom Maynard, Yasir Arafat and Zander de Bruyn, all of whom signed over the winter - against Northamptonshire at the Kia Oval.
However, Chris Tremlett is rested following a winter with England and Jade Dernbach is sidelined by a minor calf strain.