Kozuch, Brinker, Weiß and Apitz will play a show match 4 against 4 against four beach volleyball players today, it will happen in some minutes after the women's final of the beach tournament and will be streamed here: http://www.smart-beach-tour.tv/community/
EDIT Looks like it's 3 vs 3 and Brinker is not there...
EDIT 2: Brinker did not play because of a back injury.