There had been 8 teams in NBA Playoffs history to face a 3-1 deficit that have come back and won the series.
1968 Eastern Division Finals
Boston Celtics won Philadelphia 76ers
1970 Western Division Semifinals
LA Lakers won Phoenix Suns
1979 Eastern Conference Finals
Washington Bullets won San Antonio Spurs
1981 Eastern Conference Finals
Boston Celtics won Philadelphia 76ers
1995 Western Conference Semifinals
Houston Rockets won Phoenix Suns
1997 Eastern Conference Semifinals
Miami Heat won New York Knicks
2003 Eastern Conference First Round
Detroit Pistons won Orlando Magic
2006 Western Conference First Round
Phoenix Suns won LA Lakers
Information from NBATV and http://pregame.com/forums/forums/t/87652.aspx
No teams in the NBA have ever come back from a 3-o series deficit in any NBA 7 game series including the Finals.
The 2015-16 Cleveland Cavaliers overcame a 3-1 deficit to the Golden State Warriors in the NBA Finals
No 30 out of 30 teams that had a 3-1 lead in the finals won the championship.
2 The leafs & the islanders
Yes a team has come back in the NBA finals after being down 3 games to 1.
No team has ever pulled off this feat in the NBA finals
There were no teams ever came back from 3-0 deficit. There were some who forced a game 7 though. However, there were 7 teams to win a playoff series from 3-1 deficit.
Yes. KG is playing in this year's NBA Finals. He needs a big game to "come back", though.
Miami Heat
In hockey, The Boston Brewens were losing 4 to 1, and made a come back and won the game.I hope this helps.
Sharks
The 2001 New York Yankees