Answer
In the 2013 Davis Cup quarterfinals, Tomáš Berdych participated in the longest doubles match of his career. The match, which lasted 7 hours and 2 minutes, took place in Ostrava, Czech Republic. Berdych and his partner, Lukáš Rosol, faced off against the Italian duo of Simone Bolelli and Fabio Fognini. Despite their valiant effort, Berdych and Rosol ultimately fell short, losing the match 7–6(5), 6–7(7), 6–4, 3–6, 22–24.