[10] Germishuys was named Most Valuable Player (equivalent to man of the match) in the Huns' 23–20 Division 1 national championship victory over the New York Athletic Club in June 2017.
[12] Germishuys made his debut for the Elite in the team's first regular season match on April 21, 2018, starting at flanker and scoring a try, in a 41–26 defeat to Glendale.
[18] At the time, Germishuys and teammate Ben Cima were so young that they required waivers in order to be allowed to play in the tournament.
[22] Germishuys played for the Junior All-Americans for a third consecutive year in 2016, leading the team as captain at the 2016 World Rugby Under 20 Trophy.
[28] Germishuys made his debut for the United States men's national team on February 27, 2016, coming on as a substitute, in the Eagles' 24–23 defeat to Brazil in the 2016 Americas Rugby Championship.
[29] On February 10, 2018, against Canada in a 29–10 victory in the 2018 Americas Rugby Championship, Germishuys made his first start at flanker and scored his first try for the Eagles.