Daniel Altmaier is a German professional tennis player. He has a career high ATP singles ranking of world No. 47, achieved on 2 October 2023. He is the current German No. 3.

Marcus Willis is a British professional tennis player. Willis made his tour debut at the 2016 Wimbledon Championships after qualifying for the main draw, where he gained recognition after playing against Roger Federer in the second round on Centre Court.