West Ham United have confirmed that boss Avram Grant will not attend Saturday's Premier League clash against Stoke City as the Israeli will be observing Yom Kippur.
The Day of Atonement is a key date in the Jewish calendar and requires Jews to fast and pray over the course of Friday night and Saturday.
"West Ham fully respect and understand the situation," said the Hammers club in a statement. "It's very unusual for the day to clash with the fixture list."
Grant's assistant manager, Zeljko Petrovic, will take charge of the team at the Britannia Stadium and will be helped by senior coach Paul Groves and first-team coach Kevin Keen.
It is also believed that defender Tal Ben Haim will be given permission to miss the Stoke game so that he can observe Yom Kippur.
West Ham are currently at the foot of the Premier League table after losing their first four matches of the campaign.