McCollum underwent surgery to repair a torn UCL in his right thumb Tuesday.

Pelicans executive David Griffin said Friday that Williamson (hamstring) was never cleared for 5-on-5 or even full-court 3-on-3 work before the Pelicans' Play-In Matchup against the Thunder, Andrew Lopez of ESPN.com reports.

Alvarado (leg) has been cleared to resume on-court activities, but he won't suit up for Wednesday's Play-In matchup against the Thunder and isn't expected to resume game action for at least one more week, Andrew Lopez of ESPN.com reports.

Liddell (knee) signed a two-way contract with the Pelicans on Sunday.