It was not clear how many of the current positive cases involve those who are ineligible for a booster shot or those who have chosen not to receive one.
Also not clear is how many of the NBA cases involve asymptomatic players. The NFL has revised its protocols so that only unvaccinated players and those experiencing possible symptoms of Covid-19 will be tested. The NHL has five teams shut down through Christmas because of outbreaks, and numerous college games at all levels have been canceled in recent days.
"It is what it is. Just trying to stay safe as possible and that's all you can do," Lakers guard Russell Westbrook said of the NBA's rising numbers. Westbrook was briefly in the protocols late last week, before returning at least three negative coronavirus tests and being cleared to return to play without missing a game.
The league and the National Basketball Players Association have been discussing a plan in which teams in desperate need of players would be able to sign reinforcements to 10-day contracts but without those deals impacting salary cap and luxury tax figures. That deal has not yet been finalised, though talks are continuing.
The Cavaliers had five players enter the protocols on Monday, the team said. All five — centre Jarrett Allen, forwards Lamar Stevens and Dylan Windler and guards Denzel Valentine and RJ Nembhard — tested positive for COVID-19, according to a person who spoke to The Associated Press on condition of anonymity because the team did not release that specific detail.
They joined Isaac Okoro and Evan Mobley, who entered the protocols previously.
Vogel won't be on the bench when his team plays Monday at Chicago. David Fizdale will coach in Vogel's place, the Lakers said. The Bulls are returning to the court after having two games postponed last week.
Chicago still doesn't have all of its players back yet, either. Among those listed as out Monday and still in protocols is Olympic gold medalist Zach LaVine.
Through Sunday's games, those were the only games the NBA had pushed back during this outbreak. But on Monday, the league added significantly to the list of postponements, with teams simply not having enough players to compete.
Brooklyn alone has 10 players, plus some staff, in the protocols.
"It's just crazy," Nets forward Blake Griffin said.
Brooklyn's list of players in protocols includes Kevin Durant, James Harden and — even though he's still not yet able to play — Kyrie Irving, who has sat out all season for not complying with New York City's vaccine mandate. The team reversed course Saturday and said Irving would be welcomed back "for games and practices in which he is eligible to participate," knowing he'd still miss two games at the Knicks and trips to Toronto and Golden State.
The Nets had eight available players for Sunday night's game against Orlando. The Magic had nine, including four players — Aleem Ford, Hassani Gravett, BJ Johnson and Admiral Schofield — who were signed late last week to hardship contracts because of virus issues and injuries decimating Orlando's roster.
Here's how necessary they were: Magic coach Jamahl Mosley had all four on the court together in two separate stretches of Orlando's win.