[2] When he was 12 years old and wanted to play on a higher level, he switched to Kampong.

[3] Balk played in all four matches in the 2014–15 Euro Hockey League, where they were eliminated in the quarter-final.

[citation needed] Before Balk made his debut for the outdoor senior team, he played for the indoor team in the 2015 Indoor World Cup, where they won the gold medal.

[4] He made his debut for the senior national team in January 2016 in a test match against Argentina.

[6] Balk played in all seven matches in the 2018 World Cup and scored one goal.