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Greatest Collapses in Pro Basketball History

Posted by Andrew McKillop on March 1, 2011

Updated: 4/25/2011


Last season the Cleveland Cavaliers posted a 61-21 record, it was the NBA’s best record in 2009-2010.  This season the Cleveland Cavaliers are currently finished 19-63, and had the NBA’s second worst record.  The Cavaliers had the worst drop off in winning percentage from one season to the next, in major professional basketball history.

Check out the breakdown below.

Team League Year 1 W L Year 2 W L W. Pct Drop
Cleveland Cavaliers NBA 2009-10 61 21 2010-11 19 63 -0.512
Chicago Bulls NBA 1997-98 62 20 1998-99 13 37 -0.496
San Antonio Spurs NBA 1995-96 59 23 1996-97 20 62 -0.476
Houston Rockets NBA 1981-82 46 36 1982-83 14 68 -0.390
San Francisco Warriors NBA 1963-64 48 32 1964-65 17 63 -0.388
New York Nets ABA/NBA 1976-77 55 29 1977-78 22 60 -0.386
Oshkosh All-Stars NBL 1941-42 20 4 1942-43 11 12 -0.355
Miami Heat NBA 2006-07 44 38 2007-08 15 67 -0.354
Providence Steamrollers BAA 1946-47 28 32 1947-48 6 42 -0.342
Memphis Grizzlies NBA 2005-06 49 33 2006-07 22 60 -0.329
Philadelphia Warriors NBA 1951-52 33 33 1952-53 12 57 -0.326
Cleveland Allmen Transfers NBL 1944-45 13 17 1945-46 4 29 -0.312
Syracuse Nationals NBA 1949-50 51 13 1950-51 32 34 -0.312
Fort Wayne Pistons NBL/BAA 1947-48 40 20 1948-49 22 38 -0.300



References: Basketball-Reference.com, NBL Standings from APBR.org

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