Poland's team on Saturday won the gold medal in the 4x400m mixed relay event, which took place for the first time in Olympics in Tokyo. Poland's team comprising of Karol Zalewski, Natalia Kaczmarek, Justyna Swiety-Ersetic and Kajetan Duszynski clocked 3 minutes and 9.87 seconds to finish ahead of Dominican Republic. USA's team finished third with a time of 3:10.22.