Livening up sport without fans is a challenge for competitions returning after the coronavirus, and organisers have tried several ways to make empty stadiums more appealing.

A South Korean football club FC Seoul received a record fine for using sex dolls to fill seats.

Much controversy has been generated by South Korea's FC Seoul, who received a 100 million won ($81,000) fine -- the biggest in K-League history -- for placing sex dolls in their stadium.

South Korean baseball has also taken a high-tech approach with fans beamed onto a stadium big screen as they watch the game online.

Baseball cheerleaders in Taiwan have been carrying out live interactions with fans from the stadiums, chatting and broadcasting dance routines over their mobile phones.