Days in first place: NBA division and conference races, 1946-47 to 2025-26
The longest anyone has led an NBA race without winning it: the Cleveland Cavaliers ended 152 of the 2016-17 East race's 161 playing days in first place, 94% of them, and finished behind the Boston Celtics. The longest unbroken spell of that lead ran 145 days. At the other end, the Minnesota Timberwolves won the 2003-04 West race having led on twelve of its 164 playing days, never more than seven in a row. Both lists below rank by the share of a race's playing days a team spent in first place. How that is counted is spelled out under the lists.
The Cleveland Cavaliers led the 2016-17 East race on 152 of its 161 playing days, 94% of them, and finished behind the Boston Celtics.
The Memphis Grizzlies led the 2014-15 Southwest race on 129 of its 149 playing days, 87% of them, and finished behind the Houston Rockets.
The New York Knicks led the 1947-48 East race on 80 of its 93 playing days, 86% of them, and finished behind the Philadelphia Warriors.
The Oklahoma City Thunder led the 2011-12 West race on 103 of its 120 playing days, 86% of them, and finished behind the San Antonio Spurs.
The Dallas Mavericks led the 1987-88 Midwest race on 115 of its 149 playing days, 77% of them, and finished behind the Denver Nuggets.
The Utah Jazz led the 1989-90 Midwest race on 114 of its 149 playing days, 77% of them, and finished behind the San Antonio Spurs.
The Washington Wizards led the 2017-18 Southeast race on 114 of its 153 playing days, 75% of them, and finished behind the Miami Heat.
The Boston Celtics led the 2010-11 East race on 119 of its 161 playing days, 74% of them, and finished behind the Chicago Bulls.
The Chicago Bulls led the 2021-22 Central race on 115 of its 156 playing days, 74% of them, and finished behind the Milwaukee Bucks.
The Philadelphia 76ers led the 2011-12 Atlantic race on 77 of its 105 playing days, 73% of them, and finished behind the Boston Celtics.
Winners who led least
The Minnesota Timberwolves won the 2003-04 West race having led on 12 of its 164 playing days, 7% of them, and took first place for good on April 8, 2004.
The Boston Celtics won the 2016-17 East race having led on 12 of its 161 playing days, 7% of them, and took first place for good on April 10, 2017.
The Los Angeles Lakers won the 2000-01 Pacific race having led on 12 of its 158 playing days, 8% of them, and took first place for good on April 17, 2001.
The San Antonio Spurs won the 2011-12 West race having led on 14 of its 120 playing days, 12% of them, and took first place for good on April 16, 2012.
The Utah Jazz won the 1997-98 West race having led on 21 of its 164 playing days, 13% of them, and took first place for good on April 6, 1998.
The Miami Heat won the 2006-07 Southeast race having led on 19 of its 144 playing days, 13% of them, and took first place for good on April 3, 2007.
The San Antonio Spurs won the 1994-95 West race having led on 28 of its 162 playing days, 17% of them, and took first place for good on March 29, 1995.
The Los Angeles Lakers won the 2007-08 West race having led on 28 of its 162 playing days, 17% of them, and took first place for good on April 13, 2008.
The Chicago Bulls won the 2010-11 East race having led on 29 of its 161 playing days, 18% of them, and took first place for good on March 22, 2011.
The Orlando Magic won the 2018-19 Southeast race having led on 28 of its 150 playing days, 19% of them, and took first place for good on April 3, 2019.
How these lists are ranked
Everything on this page comes from the same season files the charts draw, with standings read as each day ended. All 429 charted NBA races from 80 finished seasons enter: every division and conference race from 1946-47 to 2025-26. Wild card races are not ranked; their story is the playoff cutoff, not first place. A team's time in first place is counted once per season, at its longest, whichever of its charted races it came in.
Longest leads lost is the club that ended the most of a race's playing days in first place and did not finish first. Any club in the race qualifies, not the runner-up alone, because a club can lead for four months and finish fifth.
Winners who led least is the same count for the club that did win, ranked from the fewest days up. Each row closes on the day that winner took first place for good, which the comebacks page ranks on.
Only days this race's teams played are counted, the same rule the closest races page counts closeness over. A strike or a pause freezes the standings, and a leader sitting out an idle stretch would collect time on top for nothing.
The ranking is by share rather than by the raw count, because a league's seasons are not all the same length and a short one would otherwise win by being short. Seasons cut short by a strike or a stoppage are ranked on what was played, which is the same rule and the reason for it. The count and the total are printed beside the share, so the order can be checked; where two rows print the same whole percent, the unrounded share put them in that order.
A day two clubs end level at the top is a day in first place for both of them, which is what holding first place means in English. So the two counts of one race can add up to more than the race's playing days. Races whose top two the standings cannot separate appear on neither list: with no winner, the data can name neither the club that lost a lead nor the club that kept one.
A lead measured in days and a lead measured in games are different questions, and the two lists often disagree about which season was the bigger collapse; the comebacks page ranks the same blown leads by size. Only finished seasons are ranked; every irregularity in the record is listed in the data notes.