2007–2008 Hersey competed in the
2007 Pan American Games, where she won gold medals in the 100-meter butterfly, 200-meter butterfly, 400-meter individual medley, and 4×100-meter medley relay. Also in 2007, at the U.S. Short Course Nationals, Hersey won the 400-meter individual medley. and placed second in the 200-meter butterfly and 200 individual medley. Hersey qualified for the
2008 Summer Olympics by placing second in the 200-meter butterfly, her signature event, at the U.S. Olympic Team Trials in Omaha, Nebraska. Additionally, she placed fifth in the final of the 400 m individual medley in Omaha with a career best time of 4:42.07. At the Olympics, Hersey finished eighth in the
200-meter butterfly finals with a time of 2:08.23. She had swum a then career best 2:06.96 in the semi-finals of this event a day earlier. To celebrate her victory, Hersey had a tattoo of Olympic rings inscribed on her shoulder.
2009 At the 2009 USA Swimming National Championships, Hersey won the 200-meter butterfly in a new career best time of 2:06.44, earning a place on the 2009 World Championships roster. Hersey also placed fifth in the 100 m butterfly in 58.36. At the
2009 World Aquatics Championships in Rome, Hersey placed ninth overall in 2:06.89, barely missing a place in the final.
2010–2011 Hersey won a bronze medal in the 200-meter butterfly at the
2010 Pan Pacific Swimming Championships. In 2011, Hersey won the 200-meter butterfly at the USA Swimming National Championships. She also placed first in the event at the
2011 Duel in the Pool.
2012 Summer Olympics At the
2012 United States Olympic Trials in Omaha, Nebraska, the U.S. qualifying meet for the Olympics, Hersey made the U.S. Olympic team for the second time by finishing second in the 200-meter butterfly behind
Cammile Adams with a time of 2:07.72. Hersey also competed in the 200-meter freestyle but did not advance past the semi-finals, and placed third in the 100-meter butterfly final. To celebrate her victory, Hersey had a tattoo of Olympic rings inscribed on her At the
2012 Summer Olympics in London, Hersey advanced to the finals of the
200-meter butterfly and swam a career-best time of 2:05.78 to finish in fourth place. In 2017, swimmer
Madisyn Cox went 4:01.15 in the 400 IM, making her the 10th fastest USA swimmer ever in the event and besting the record held by Hersey. That conference record had stood at 4:01.91 when Hersey set it back in 2009. ==See also==