Dating to the 2001-02 preseason (when this data became readily available), 17 teams entered regular-season competition with just one loss or fewer on their preseason résumés. In the regular season, all but one of them became playoff teams, averaging about 49 victories in the upcoming campaign.
https://insider.espn.go.com/nba/insider/news/story?id=5707184
hopefully Jerry will rest the starters for the rest of the regular season, so they'll be fresh for the first round.