England Test captain Joe Root will have to wait a little longer to get back to the crease after the England and Wales Cricket Board confirmed he would not be available for Yorkshire's next County Championship match.
Root - who replaced Alastair Cook as skipper in February - was unavailable for Yorkshire's opening-round defeat to Hampshire and he has also been ruled out of their clash with Warwickshire, which starts on Friday.
The 26-year-old is not the only England player to be withdrawn from county duty for round two, with Yorkshire also denied the services of Jonny Bairstow.
New-ball bowlers Stuart Broad and James Anderson have also been stood down despite playing for Nottinghamshire and Lancashire respectively in round one, with England looking to protect their top players ahead of a busy schedule.
"We have to recognise the demands of the international programme over the next 12 months, with seven Tests in 10 weeks from July followed by another seven in Australia and New Zealand," said Andrew Strauss, the ECB's director, England cricket.
"We have to manage all our players and especially our bowlers accordingly. Both Stuart and Jimmy are committed to their counties and keen to play as much possible. But equally they recognise both the challenges and demands to come.
"A plan for availability for the early-season fixtures has been put together in consultation with the players, and counties were made aware of the likely schedule back in January.
"Stuart bowled 21 overs for Nottinghamshire at Leicestershire and Jimmy bowled 42 for Lancashire at Essex, so it makes sense for us to stick to the original plan of them taking a week's break before returning for the third round of Championship fixtures. They will also be available for further Championship matches as well as the early stages of the One-Day Cup."
Cook will be eligible for Essex's match with Somerset, but must first recover from a hip injury, while Jake Ball, Steven Finn and Mark Wood have been cleared for action.