Referee Cunha injured before World Cup

According to Arbitro Internacional, referee Andres Cunha (Uruguay) has torn his meniscus and will be out of action for at least one month. The injury happened before the World Cup referee seminar in Qatar. FIFA said that the final list will be released following this seminar, so Cunha (photo) is in danger of missing the 2018 World Cup in Russia due to this unfortunate injury.
In 2014, South African referee Daniel Bennett missed the World Cup due to an injury suffered at a training session right before the final tournament in Brazil. Assistant referee Ravinesh Kumar (FIJ) got injured two months before the 2014 World Cup and was replaced with Mark Rule (NZL) in the OFC referee trio led by Peter O’Leary.
After refereeing at the 2002 World Cup in Korea/Japan, Carlos Batres (GUA, photo) missed the final tournament in 2006 due to an injury. He managed to recover later that year and then returned to the World Cup in South Africa 2010. Another CONCACAF referee who participated at the World Cup in 2002, Peter Prendergast (JAM), missed the 2006 competition in Germany due to a knee injury, which practically ended his career.