5 Biggest Longshots to Win the NBA Title

In the modern NBA, oddsmakers routinely identify two or three juggernauts with near-even odds of winning the championship, while relegating the majority of the league to longshot status. Because the postseason demands winning four best-of-seven series, basketball rarely yields the Cinderella outcomes seen in single-elimination formats. Over the course of seven games, variance shrinks, and the roster with superior talent and depth almost always prevails.

Yet across league history, a handful of resilient squads have defied expectations. Driven by unexpected roster cohesion, generational individual performances, defensive discipline, and timely shifts in the competitive landscape, these underdogs navigated the grueling four-round gauntlet to hoist the Larry O’Brien Trophy. Understanding how these longshots overcame the odds reveals valuable insights into what truly drives championship basketball.

Championship longshots at a glance

While hundreds of teams enter training camp with long championship odds, only five teams since the early 1990s have overcome preseason odds of +1200 or longer to capture the title. The table below details their preseason lines, postseason path, and eventual Finals triumphs.

Team & Season	Preseason Odds	Conference Seed	Finals Opponent	Key Individual Performer
Houston Rockets (1993-94)	+1200	No. 2 West	New York Knicks	Hakeem Olajuwon
Detroit Pistons (2003-04)	+1500	No. 2 East	Los Angeles Lakers	Chauncey Billups & Defense
Toronto Raptors (2018-19)	+1850	No. 2 East	Golden State Warriors	Kawhi Leonard (Finals MVP)
Dallas Mavericks (2010-11)	+2000	No. 3 West	Miami Heat	Dirk Nowitzki (Finals MVP)
Golden State Warriors (2014-15)	+2800	No. 1 West	Cleveland Cavaliers	Andre Iguodala (Finals MVP)

The 5 biggest championship longshots in NBA history

The journey from unheralded contender to world champion requires an exceptional blend of health, timely player execution, and tactical adaptability. These five championship rosters proved that preseason projections do not determine postseason outcomes.

Houston Rockets (1993-94)

• Preseason Odds: +1200
• Western Conference Seed: No. 2
• Finals Opponent: New York Knicks
• Key Players: Hakeem Olajuwon, Sam Cassell, Otis Thorpe

Following three consecutive championships by the Chicago Bulls, the basketball world was stunned when Michael Jordan announced his sudden retirement from the sport. With the league's dominant force suddenly gone, oddsmakers were uncertain how to project the remaining field, causing lines to widen across multiple contenders. Amid this uncertainty, the Houston Rockets entered opening night at +1200 odds, viewed merely as the third-best team in the Western Conference.

Houston possessed a potent mix of veteran leadership and young depth, centered around Hakeem Olajuwon alongside key contributors Sam Cassell and Otis Thorpe. The Rockets claimed the second seed in the West before conquering a gauntlet featuring Golden State, Phoenix, and Utah. Reaching the NBA Finals, they engaged in a grueling seven-game defensive slugfest against the New York Knicks. By capturing Game 7, Houston validated its potential and secured the first of back-to-back franchise championships.

Detroit Pistons (2003-04)

• Preseason Odds: +1500
• Eastern Conference Seed: No. 2
• Finals Opponent: Los Angeles Lakers
• Finals Series Result: 4-1

The 2003-04 Detroit Pistons were widely recognized for their suffocating defensive discipline, yet few oddsmakers believed they possessed the offensive firepower to outlast legitimate powerhouses. In the Eastern Conference, Detroit was viewed as an underdog behind Indiana, and the general betting market assumed that the star-studded Los Angeles Lakers "dream team" would easily capture the championship against whichever Eastern club emerged. Consequently, Detroit carried +1500 odds into the season.

Detroit cemented the second seed in the Eastern Conference, finishing seven games behind the Indiana Pacers while holding a seven-game cushion over the New Jersey Nets. In the playoffs, the Pistons dispatched the Milwaukee Bucks, survived a classic seven-game series against New Jersey, and eliminated Indiana in six games. Facing the heavily favored Lakers in the Finals, Detroit executed a defensive masterclass, holding Shaquille O'Neal and Kobe Bryant in check to shock the basketball world in an emphatic five-game upset.

Toronto Raptors (2018-19)

• Preseason Odds: +1850
• Eastern Conference Seed: No. 2
• Finals Opponent: Golden State Warriors
• Finals MVP: Kawhi Leonard

Prior to the 2018-19 season, the Golden State Warriors were overwhelming favorites to repeat as champions, with various Western Conference contenders expected to challenge them. In the East, despite acquiring Kawhi Leonard via an offseason blockbuster trade, the Toronto Raptors were largely discounted by oddsmakers, who posted them as a distant +1850 longshot to win the title.

Toronto quickly proved that its new defensive identity and half-court stability translated to postseason success. After defeating Orlando in the first round, the Raptors survived an intense seven-game clash with Philadelphia, followed by an Eastern Conference Finals triumph over the Milwaukee Bucks. In the Finals, Toronto faced the defending champion Warriors and closed out the series in six games. Leonard secured the Finals MVP award as the franchise captured its first championship.

True championship underdogs overcome betting skepticism by pairing an elite defensive identity with a superstar anchor capable of controlling late-game possessions.

Dallas Mavericks (2010-11)

• Preseason Odds: +2000
• Regular-Season Record: 57-25
• Western Conference Seed: No. 3
• Finals MVP: Dirk Nowitzki

The 2010-11 campaign was defined by massive public anticipation surrounding the Miami Heat, who paired LeBron James and Dwyane Wade, alongside Kobe Bryant's defending champion Los Angeles Lakers. The Dallas Mavericks were relegated to seventh on the championship odds board, carrying a +2000 price tag. Although Dallas had established regular-season consistency, skepticism persisted regarding their postseason ceiling.

Dallas surpassed expectations with a 57-25 record to claim the third seed in the Western Conference. Once the postseason arrived, the Mavericks caught fire, needing only 21 total games to navigate their title run. They eliminated Portland in six games, swept the defending champion Lakers in the second round, and defeated Oklahoma City in five games. In the Finals, Dallas matched up against the favored Miami Heat, rallying from behind to win in six games and earn Dirk Nowitzki his lone championship and Finals MVP trophy.

Golden State Warriors (2014-15)

• Preseason Odds: +2800
• Regular-Season Record: 67-15
• Finals Opponent: Cleveland Cavaliers
• Finals MVP: Andre Iguodala

Before becoming the dominant dynasty of the modern era, the Golden State Warriors entered the 2014-15 season as unproven contenders under a first-year head coach. Betting markets favored established forces like the Cleveland Cavaliers and San Antonio Spurs, leaving Steph Curry and the Warriors with steep +2800 longshot odds before opening night.

The Warriors instantly validated their offensive innovation and defensive versatility, compiling a dominant 67-15 regular-season record to win the Western Conference by 11 games over the Houston Rockets. In the playoffs, Golden State swept New Orleans, defeated Memphis in six games, and dispatched Houston in five. In the Finals against Cleveland, Golden State overcame early adversity to win the series in six games, securing the franchise's first championship since 1975 behind an unexpected Finals MVP performance from Andre Iguodala.

How preseason championship odds work

To evaluate why these five franchises were overlooked, observers must understand how sportsbooks construct preseason futures markets. Oddsmakers rely on statistical modeling, prior postseason results, roster strength, and public betting volume when opening their championship lines.

In standard sports betting notation, lines preceded by a plus sign indicate the potential profit earned on a 100-dollar wager. A team priced at +1200 delivers 1,200 dollars in profit on a successful 100-dollar bet, representing an implied probability of just over seven percent. Conversely, a team listed at +2800 delivers 2,800 dollars in profit, representing an implied probability of roughly 3.4 percent.

Because the NBA uses a best-of-seven playoff series structure, oddsmakers shade betting lines heavily toward established rosters. In single-elimination tournaments, a hot three-point shooting night or foul trouble can easily eliminate a superior opponent. Over seven games, strategic adjustments, conditioning, and elite talent flatten variance, ensuring that true underdogs face astronomical hurdles to capture 16 postseason victories.

Step-by-step guide to evaluating NBA contenders

Identifying an overlooked championship contender before the postseason requires looking beyond media consensus and examining structural traits common to past longshots.

1. Identify an elite offensive anchor: Postseason defenses focus heavily on taking away primary schemes. Contenders must possess a reliable scorer like Hakeem Olajuwon, Dirk Nowitzki, or Kawhi Leonard who can manufacture efficient shots against elite half-court schemes.
2. Analyze half-court defensive metrics: Championship longshots rely on defensive versatility to slow down higher-seeded opponents. Teams that effectively defend pick-and-roll action and protect the interior consistently outperform their regular-season seeds.
3. Verify complementary roster depth: Exhausting postseason runs require secondary contributors who can step into high-leverage roles. Players like Sam Cassell, Otis Thorpe, and Andre Iguodala provided crucial offensive and defensive swings that decided close playoff games.
4. Assess early regular-season point differential: Genuine championship sleepers typically reveal themselves early. If a team with long preseason odds starts blowing out opponents and generates a dominant net rating, their title viability has outgrown their betting odds.

Common mistakes when assessing NBA contenders

Many observers fail to identify championship-caliber underdogs due to common evaluation errors. Avoiding these pitfalls makes it easier to spot genuine postseason contenders:

• Overvaluing regular-season offensive pace: Fast-break offenses often inflate regular-season scoring averages. When playoff tempos decline and physical half-court defense increases, teams lacking interior scoring often fail in a best-of-seven series.
• Prioritizing star names over defensive cohesion: The 2003-04 Los Angeles Lakers featured four Hall of Fame talents, yet were dismantled by a unified, disciplined Detroit Pistons defense that prioritized team-wide rotation over individual reputation.
• Ignoring the impact of sudden league transitions: Major events like Michael Jordan's sudden 1993 retirement or Kawhi Leonard moving to Toronto radically alter championship pathways before the betting market fully adjusts.
• Assuming top seeds cannot be swept: While higher seeds hold home-court advantage, an underdog peaking at the right moment can overpower an established favorite, as demonstrated by Dallas sweeping the two-time defending champion Lakers in 2011.

Frequently asked questions

Which team was the biggest preseason longshot in NBA history to win the Finals?

The 2014-15 Golden State Warriors were the biggest preseason longshot to win the NBA championship, entering the regular season with +2800 odds before finishing with a 67-15 record and winning the title.

Why are longshot champions so rare in the NBA compared to other sports?

The NBA Playoffs utilize a best-of-seven series format across every round, requiring teams to win 16 games. This format dramatically reduces single-game variance and ensures that superior talent usually prevails over four rounds.

What odds did the 2010-11 Dallas Mavericks have before winning the title?

The Dallas Mavericks carried +2000 preseason odds heading into the 2010-11 season, ranked seventh overall in title probability before Dirk Nowitzki led them to the franchise's first championship.

How did Michael Jordan's first retirement affect championship odds in 1993-94?

Jordan's unexpected retirement created league-wide parity, leading oddsmakers to spread odds more broadly across several contenders; this allowed the Houston Rockets to enter the season as a +1200 longshot before winning the title.

Who was named Finals MVP for the 2014-15 Golden State Warriors?

Andre Iguodala was named Finals MVP for the 2014-15 Golden State Warriors after providing exceptional defense and scoring support during their six-game victory over the Cleveland Cavaliers.

The bottom line

In a league where talent and depth routinely dominate multi-game postseason series, capturing the Larry O’Brien Trophy as an underdog remains one of the most difficult achievements in professional sports. The five championship squads featured here demonstrate that when elite superstar talent, disciplined defensive systems, and structural roster synergy align, preseason odds cease to matter. While the vast majority of NBA titles are claimed by preseason favorites, these historical outliers prove that the right combination of cohesion and timing can redefine basketball history.