Stefan Kozlov is an American professional tennis player of Russian descent. He has a career-high ATP ranking of world No. 103 achieved on 18 July 2022 and doubles ranking of world No. 180 on 19 June 2017.

Matteo Berrettini is an Italian professional tennis player. He has been ranked as high as world No. 6 in singles by the Association of Tennis Professionals (ATP), which he achieved in January 2022, and world No. 105 in doubles, attained in July 2019. Berrettini has won eight ATP Tour singles titles and two doubles titles, and produced his best major performance by reaching the singles final of the 2021 Wimbledon Championships. He also became the first man born in the 1990s and first Italian man to reach the quarterfinals or better at all four majors after earning his first Australian Open semifinal in 2022.