Having lost to Philadelphia two nights earlier after starting the season with a victory over Chicago, the Heat are now under the .500 mark in the regular season for the first time since the trio of LeBron James, Dwyane Wade, and Chris Bosh began playing together.
That group lost their first game (88-80 to the Boston Celtics) to begin the 2010-11 season, then ran off four consecutive wins.
The Heat started off the 2011-12 season by winning their first five games. Last year, they split their first two games, then won four in a row.
The losses to the Nets and 76ers followed somewhat similar patterns.
The Heat got off to bad starts, recovered to take second-half leads, then fell back.
One difference was that against the Nets, they were able to cut a 12-point deficit down to one point in the closing seconds before dropping the 101-100 decision.
Against the 76ers, they were able to overcome an eight-point deficit with under five minutes left to take a one-point lead with just over two minutes remaining. But the 76ers responded with a 5-0 run on their way to the 114-110 victory.
This marks the first time since early last January when they lost at Indiana and Portland to begin a six-game road trip that they have lost back-to-back games, and the first time in 11 months that they have given up over 100 points in consecutive defeats.
They lost 105-101 at Washington last Dec. 4 and 112-92 to New York two nights later.
They surrendered over 100 points in the NBA Finals year but got a win in one of those games, beating San Antonio 103-100 in Game 6 after losing Game 5 114-104.
The Heat will get back to Miami to try to snap their losing streak when they host the Washington Wizards Sunday evening. Five of their next six games are in their AmericanAirlines Arena home.