The Indiana Pacers have 60 losses in a season for the 3rd time in franchise history (first time since 1984-85). The Washington Wizards have already clinched 3 straight 60-loss seasons.
The Timberwolves had 4 straight 60-loss seasons in 1991-95. They came close to repeating that with 3⁄4 in 2007-11 (in 2008-09 they had 58 losses).
Other teams to have 3 straight 60-loss seasons:
The Vancouver Grizzlies actually got bailed out by the lockout, they were on pace for 68 losses in 1999. They didn’t have a season with less than 54 losses until they were in Memphis in 2003-04.
The Wizards and Pacers already have 60 losses this year. The Nets, Jazz, and Kings could still hit 60 losses this season if they lose 1 or 2 more games.
6 teams have had 70+ losses in a season, most recently the 76ers in 2015-16.