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Eugenie "Genie" Bouchard (; French: Eugenie Bouchard, pronounced [oZeni buSaR]); born February 25, 1994) is a Canadian professional tennis player. At the 2014 Wimbledon Championships, Bouchard became the first Canadian-born player representing Canada to reach the finals of a Grand Slam in singles, finishing runner-up to Petra Kvitova. She also reached the semifinals of the 2014 Australian Open and 2014 French Open, and won the 2012 Wimbledon girls' title. Following the end of the 2013 WTA Tour, she was named WTA Newcomer of the Year.
Bouchard started the year by playing at the Brisbane International. She was defeated in the first round by Shelby Rogers. At the Sydney International, Bouchard defeated world No. 23 Zhang Shuai in the first round. She then defeated world No. 6 Dominika Cibulkova in straight sets to set up a quarterfinal meeting with world No. 27 Anastasia Pavlyuchenkova, whom she defeated to reach her first semifinal since February 2016. She lost to world No. 10 Johanna Konta. At the Australian Open, Bouchard defeated Louisa Chirico and Peng Shuai in her first two matches, but lost to Coco Vandeweghe in three sets in the third round. She lost in the first round of her next four tournaments, the Mexican Open, Indian Wells Masters, Miami Open and Monterrey Open respectively. Bouchard made a return to the ITF Pro Circuit for the first time in nearly four years at the ITF 80K in Indian Harbour Beach, but was defeated by Victoria Duval in the quarterfinals. Two weeks later, she lost in the opening round of the Istanbul Cup to Jana Cepelova. In May at the WTA Premier Mandatory Madrid Open, she won her first tour-level match since the Australian Open in January with a victory over Alize Cornet. She then managed to defeat Maria Sharapova in the second round, her first win in five meetings, to set up a match with world No. 2 Angelique Kerber in the third round. Bouchard won the first set and was up 5-0 in the second before Kerber had to retire with a left thigh injury. Her run was ended by world No. 9 Svetlana Kuznetsova in the quarterfinals. At the French Open, she won her first round match over Risa Ozaki but was defeated by Anastasija Sevastova in the second. Bouchard lost in the opening round of the Wimbledon Championships to Carla Suarez Navarro. At the Citi Open in August, she reached her second WTA doubles final but lost to Shuko Aoyama and Renata Voracova with partner Sloane Stephens. In October, at her last tournament of the season, the BGL Luxembourg Open, she and partner Kirsten Flipkens advanced to the doubles final but were defeated by Lesley Kerkhove and Lidziya Marozava. In December, it was announced that trial for Bouchard's lawsuit against the USTA (regarding the alleged head injury caused to Bouchard by the slippery surface in a physiotherapy room at the 2015 US Open) would take place in late February 2018, and is expected to last around 10 days.
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How did the head injury affect her play?

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Born in Nelson County, Virginia, Allen was the son of Loretta M. and Earl Raymond Allen, who was recorded in the 1920 and 1930 U.S. census records for Wayne County, Michigan as working as a chauffeur to a private family. He earned varsity letters in football, track and basketball at Lake Shore High School in St. Clair Shores, Michigan; having graduated in 1940. Allen went to Alma College in Michigan and later at Marquette University in Milwaukee, Wisconsin, where he was sent as an officer trainee in the U. S. Navy's World War II V-12 program. He graduated with a B.S. in education from Michigan State Normal College (now Eastern Michigan University) in Ypsilanti, and then attended the University of Michigan in Ann Arbor, where he earned his master's degree in physical education in 1947.
Allen's death may have been indirectly caused by a Gatorade shower. He died on December 31, 1990, from ventricular fibrillation in his home in Palos Verdes Estates, California, at the age of 72. Shortly before his death, Allen noted that he had not been feeling well since some of his Long Beach State players dumped a Gatorade bucket filled with ice water on him following a season-ending victory over the University of Nevada, Las Vegas on November 17, 1990 (he remarked that the university couldn't afford actual Gatorade). The sports editor of the Long Beach State newspaper, the Daily Forty-Niner, was on the field that day and recalled that the temperature was in the 50s with a biting wind. Allen stayed on the field for media interviews for a considerable length of time in his drenched clothing, and boarded the bus back to Long Beach State soaking wet. Having promised a winning season to a football program on the verge of collapse, in his final game Allen delivered on his promise. His players hoisted him on their shoulders as photographers snapped away, and Allen's team ended the season with a winning record. Allen said his season at Long Beach State was the most rewarding of his entire career. Allen's son George denied that the Gatorade shower caused the death, attributing it to an existing heart arrythmia. He stated that seeing Gatorade showers on television was a reminder that his father "went out a winner". After Allen's death, the soccer and multipurpose field area on the lower end of campus was dedicated in his honor as George Allen Field. A youth baseball field in Palos Verdes Estates is also named after him.
Answer this question using a quote from the text above:

How did the Gatorade shower kill him?

Answer:
not been feeling well since some of his Long Beach State players dumped a Gatorade bucket filled with ice water on him