A coronavirus outbreak at Everton has forced the postponement of the club’s match at Burnley, the Premier League said Friday.

It’s the third match of the Boxing Day lineup to be postponed as part of a Sunday program that still features six games. Defending champion and league leader Manchester City hosts 2016 winner Leicester among the six games scheduled to go ahead Sunday.

The Premier League has now called off 13 matches because of coronavirus issues in two weeks, with players having to isolate after testing positive or if they are unvaccinated and a close contact of a COVID-19 case.

Everton had asked for the postponement citing virus cases and injuries, and the league’s board “regrettably approved” the request.

“The Board reviewed the club’s request today to postpone the match following further injuries to their squad. They concluded that the club will not be able to fulfill their fixture this weekend as a result of an insufficient number of players available to play due to COVD-19 cases and injuries,” the league said in a statement.