Following a government edict aimed at combating the newest outbreak, stadium capacities have been cut from 75% to 50%.
On January 1st, Roman Reigns revealed that he will be unable to defend his championship at WWE's Day 1 event that evening.
It is still not clear if Novak Djokovic will be defending his Australian Open title in 2022, as his vaccination status is still causing hold ups.
The USA vs Ireland ODI series was cancelled after the coronavirus surge in the Ireland camp.
Minnesota Timberwolves were playing without all five of their regular starters due to COVID-19 health and safety protocols.
The Australia vs England Test in Melbourne will go ahead despite cases of coronavirus being reported in the English camp.
The first ODI between Ireland and USA, scheduled for December 26, has been cancelled following a positive COVID-19 test among the crew of match officials.
US tennis player Coco Gauff had tested positive for the coronavirus, forcing her to pull out of the Tokyo Olympics.
Rafael Nadal was preparing to compete in the Australian Open, which begins on January 17 in Melbourne, Australia.
The match at Tottenham Hotspur Stadium against Rennes was scheduled for December 9 but was cancelled due to a Covid-19 outbreak in the squad.