A number of players in this summer's World Cup may have to juggle their playing commitments with their dedication to the holy month of Ramadan.
Muslims are supposed to refrain from all food and drink from dawn until dusk during Ramadan, which will fall during the tournament for the first time since 1986.
The religious commitment is due to begin on June 28, which is when the round-of-16 matches get underway, and end on July 27.
According to the Daily Mail, Bosnia and Herzegovina star Edin Dzeko is a follower of Islam, as is Germany star Mesut Ozil and Belgium pair Marouane Fellaini and Moussa Dembele.
Ivory Coast brothers Kolo and Yaya Toure are both practising Muslims, while national teammates Gervinho and Cheick Tiote both follow the faith.
France's Karim Benzema, Mamadou Sakho, Bacary Sagna and Moussa Sissoko are also expected to contend with their Ramadan commitments should their nation emerge from the group phase successfully.
The World Cup begins with a Group A clash between Brazil and Croatia in Sao Paulo tomorrow.