Matwé Middelkoop is a Dutch professional tennis player who specialises in doubles. He has won 14 doubles titles on the ATP Tour, most notably the 2022 Rotterdam Open alongside Robin Haase, and reached a career high doubles ranking of world No. 18 on 6 February 2023.

Philipp Oswald is an Austrian professional tennis player who primarily plays doubles events on the ATP Tour. On 7 December 2009, he reached his highest ATP singles ranking of world No. 206, and his highest doubles ranking of No. 31 was reached on 21 June 2021. In 2021, he participated in the 2020 Tokyo Olympics partnering with Oliver Marach.