 Complete the following phrase:  In 1993, he had also begun parallel career with the beach volleyball. With Oliver Stamm, Berger competed at the 2000 Summer Olympics, in Sydney, but they lost to the Brazilian duo Zé Marco de MeloRicardo Santos. At the 2004 Summer Olympics, in Athens, he plays with Florian Gosch after an injury to his season partner Clemens Doppler. A year earlier he won the 