Other sports like the NBA and NFL are having similar issues. Note:

The reason for the opt-out, according to league chiefs, was because the spike caused the "regular-season schedule [to be] materially disrupted as a result of increasing Covid cases and a rising number of postponed games."

...and this was the preceding paragraph, which is statistically insane if true, and why I created this thread:

This is despite the league previously reporting a near-100 percent vaccination rate across more than 700 players – with just one player, Tyler Bertuzzi of the Detroit Red Wings, reported to have declined to be vaccinated.