Ka I 21–18 Hang Sai was a football match held on 16 June 2019 involving two teams in Macau. The fixture was part of the 2019 Taça de Macau. Players of both Ka I and Hang Sai decided to use the competitive match as a means of protest against the Macau Football Association for its role in the withdrawal of the Macau national team from the 2022 FIFA World Cup qualifiers.