24 golds and broke 6 world records during the World Cup series. 2013 World Championships At the 2013 World Championships, she pulled out of the 100 m backstroke after qualifying second in the heats (preliminary races), to concentrate on the final of the 200 m individual medley which she subsequently won with a time of 2:07.92. She then touched third in the 200 m butterfly behind Liu Zige and Mireia Belmonte. She capped off her competition with a final gold in the 400 m individual medley, finishing in 4:30.41. 2013 World Cup Series Throughout the 2013 World Cup series, she set world records in 100-meter IM, 200-meter IM, and 400-meter IM, breaking the 200-meter record twice and 100-meter record three times. 2014 In 2014, Hosszú broke the short course world records in the 100-meter and 200-meter individual backstroke events and in 100-, 200-, and 400-meter individual medleys. 2015 2015 World Championships At the 2015 World Championships in Kazan, Hosszú again dealt with a monster programme, competing in the 200- and 400-meter individual medley, 100- and 200-meter backstroke, 100- and 200-meter freestyle, and 200-meter butterfly. She posted the top time in the prelims of the 100-meter backstroke, but elected to pull out of the semifinal to concentrate on the 200-meter individual medley final, a decision which ultimately paid off. She broke the previous world record set by Ariana Kukors back in 2009 in a stunning time of 2:06.12. Hosszú's time of 58.78 in the prelims of the 100-meter backstroke would have earned her a bronze medal in the final; however the 200-meter individual medley final was 30 minutes after the backstroke semifinal and swimming it might have cost her the gold medal and the world record in the 200-meter individual medley. In addition, Hosszú won bronze in the 200-meter backstroke, placed fifth in the 200-meter freestyle, and capped it off with a victory in the 400-meter individual medley on the last day. 2015 European Short Course Championships Hosszú won six gold medals at the 2015 European Short Course Championships, sweeping all three backstroke and three individual medley events. She broke world records in the 100- and 400-meter individual medleys. 2016 2016 Summer Olympics At the 2016 Summer Olympics in Rio de Janeiro, Hosszú won the gold medal and broke the world record in the 400-meter individual medley, won the gold medal and broke the Olympic record in the 200-meter individual medley,