Williams announced Sunday in a YouTube video that he has retired from professional basketball.

Williams is not planning to retire and will be "proactive in talking to teams during free agency," per his agent Wallace Prather, Shams Charania of The Athletic reports.

Williams (back) has been ruled out for Tuesday's Game 5 against the Heat, Brad Rowland of PeachtreeHoops.com reports.

Williams (back) is out for Friday's Game 3 against the Heat.

Williams (back) is out for Game 2 against the Heat on Sunday, Brad Rowland of PeachtreeHoops.com reports.

Williams (back) is out for Game 1 against the Heat on Sunday, Chris Kirschner of The Athletic reports.

Williams (back) will not play Friday against the Cavs, Chris Kirschner of The Athletic reports.

Williams (back) has been ruled out for Wednesday's play-in matchup against the Hornets, Brad Rowland of PeachtreeHoops.com reports.

Williams (back) will not be available for Sunday's game at Houston.

Williams (back) is doubtful for Sunday's game against the Rockets.