The bottom fell out in the 1972–73 season. For all intents and purposes, the season ended when Cunningham bolted to the ABA, leaving the Sixers with a roster of Greer and little else. The 76ers lost their first 15 games of the season, and a few months later set a then-record 20-game losing streak in a single season. Their record following the 20-game losing streak was 4–58, and the team at that point had just lost 34 of 35 games. The 76ers finished the season with a 9–73 record, leading the skeptical Philadelphia press to call them the "Nine and 73-ers". Under coach Roy Rubin the 76ers went 4–47. It was his first and, as it turned out, his last NBA coaching job. He was succeeded by player-coach Kevin Loughery, who went 5–26 the rest of the way. The 76ers finished an NBA-record 59 games behind the Atlantic Division champion Boston Celtics. The nine wins by the 1972–73 squad is the fourth fewest in NBA history, and remains the fewest for a full 82-game season. The 73 losses, although threatened several times, remains the all-time low-water mark for any NBA franchise. The 76ers’ 0.110 winning percentage was a record worst at the time, and would remain the lowest until the 2011–12 Charlotte Bobcats finished 7–59 for a .106 winning percentage in a season shortened due to a lockout. Only six seasons earlier, the 76ers had set the NBA record for most wins in a season. The 76ers of 1972–73 are generally considered to be the worst team ever to take the court in NBA history. However, in 2007, NBA historian Kyle Wright argued that the 1992–93 Dallas Mavericks and 1997–98 Denver Nuggets, both of whom won eleven games, plus the inaugural Cleveland Cavaliers, who won 15 games, were actually poorer teams due to much weaker schedules.