relatives of tennis players have been unable to see matches at Wimbledon. Similar problems have been reported at Eton Dorney for the rowing and the ExCel boxing venue, where parents have only been allowed entry after drawn-out negotiations. Details of the mix-up emerged as organisers began handing school children front-row seats in a desperate bid to fill venues. A senior IOC member, Gunilla Lindberg, complained that the issue had become chaotic and distracting for many athletes. Relatives and friends of Swedish and Singapore swimmers are known to have been refused entry, but the problem is thought to have affected competitors from other countries as well. 'It is so confusing for everyone,' Ms Lindberg told the Daily Telegraph. 'Parents keep calling the athletes, no one knows where the tickets are and it is not very good preparation for the athletes to be so stressed about it. Ms Lindberg said the problem appeared to have been caused by a glitch in the system used to allocate tickets to athletes' relatives. She added: 'This is chaos, no one knows about the system. 'But I don't know how it is going to be sorted as it is so complex and this is the first Games this programme has been used.' All by himself: A lone man sits in an empty section of seats inside Earl's Court during a women's volleyball preliminary match between China and Turkey Massive support: Thousands of spectators crowded onto every available spot in the free areas around Greenwich Park to