Rivalry consequences of fighting. However, when the competition is not enough in sports and the tensions are high fighting may ensue. Rivalries may increase motivation, lead to greater effort, and better performance. It may also contribute to greater risk taking behavior among participants, and increase a propensity for unethical behavior. These difference may lead to poor decision making on the part of groups and individuals that may not otherwise take place in the absence of a rivalry. Examples examined in the literature include the 1994 attacks by figure skater Tonya Harding against her rival Nancy Kerrigan, the admission in court by
Zhang Hao (figure skater) day in 1987, meaning she was 14 and too young to compete in senior events during the 2001–02 season, such as the Four Continents where they won bronze, as well as the Olympics and World Championships. The dates disappeared from the website by February 15. On February 17, the ISU said there were no discrepancies for the Zhangs in terms of the birthdates listed on their passports, ISU registration forms and the Chinese Olympic Committee's website. "GP: Grand Prix; JGP: Junior Grand Prix" Zhang Hao (figure skater) Zhang Hao (; ; born July 6, 1984) is a Chinese pair skater.