Has no team ever come back from 3 1?

No, it is not true that no team has ever come back from being down 3-1 in a series. In fact, there have been several instances in various sports where teams have overcome this deficit and emerged as the winners. One notable example occurred in the 2016 NBA Finals. The Cleveland Cavaliers were trailing the Golden State Warriors 3-1 after four games. However, they made a remarkable comeback by winning the next three games in a row, ultimately winning the championship. This was the first time in NBA history that a team had successfully reversed a 3-1 deficit in the Finals. Another example comes from baseball. In the 2016 World Series, the Chicago Cubs were down 3-1 to the Cleveland Indians. Despite the odds stacked against them, the Cubs managed to win the next three games and claim their first World Series title in over 100 years. These examples, among others, show that it is indeed possible for a team to come back from a 3-1 deficit. It may be challenging, but with determination, skill, and a bit of luck, teams have proven that they can turn the tables and win against all odds.