Fast bowlers Andre Nel and Monde Zondeki have both missed out on central contracts from Cricket South Africa.
Warwickshire duo Jim Troughton and Naqaash Tahir are in line for their first Championship appearances of the season.
Warwickshire fast bowler Monde Zondeki has signed a one-year national contract with South Africa.
Andrew Strauss says the 50-over format has showcased the best of young English talent.
Full-on Yorkshire are the pride of the County Championship, says David Lloyd, and deservedly so.
T20 Champions Lge