As the 2016 Summer Olympics in Rio de Janeiro approach, American basketball fans are experiencing the now quadrennial tradition of wondering (and worrying) whether the United States men’s Olympic basketball team might be vulnerable. Alas, things weren’t always this way.

In 1989, the International Basketball Federation (FIBA) voted to allow NBA players to compete in international competitions[1]. Three years later, USA basketball debuted the "Dream Team" – a roster of NBA superstars – which swept its way to gold at the FIBA Americas Championship[2] and Barcelona Olympics, defeating awestruck opponents by an average of 47 points in the two competitions.

Through 2000, NBA players represented the U.S. at three Olympics, one FIBA World Cup[3] (“Worlds”), and two FIBA Americas Championships (“Americas”); they went 48-0, winning only two of their first 40 games by fewer than 20 points and only two of those 48 games by fewer than 10, both against Lithuania at the 2000 Olympics in Sydney. But amidst that undefeated run, U.S. margins of victory steadily tightened:
U.S. Men's Olympic, World Championship, and FIBA Americas Championship Teams | Average Margin of Victory
The Americans' breaking point came at the 2002 Worlds in Indiana, where Team USA[4] lost three games and finished sixth. Two years later, the U.S. lost three games at theAthens Olympics and won bronze. And two years after that, they lost a semifinal at the Worlds in Japan and took home bronze again[5]. A new national team program[6] and renewed commitment from top players finally returned the USA to gold at the 2007 Americas, 2008 and 2012 Olympics, and 2010 and 2014 Worlds[7].

The 2016 Olympics mark the sixteenth time that the U.S. men’s national basketball team is comprised of NBA players[8] (seven Olympics, five Worlds, and four Americas). And if you’ve been paying attention to “who’s in and who’s out”, it’s hard not to conjure up at least some fearful memories of the goldless mid-2000s, when instead of Jason Kidd, Kobe Bryant, Tracy McGrady, Kevin Garnett, and Shaquille O’Neal (all non-participants), the 2004 Olympic team featured Stephon Marbury, Allen Iverson, Richard Jefferson, and Lamar Odom in its starting five[9].

Notable absences from this year’s edition include Stephen Curry, Russell Westbrook, LeBron James, and Kawhi Leonard – the top four performers in the NBA last season inBox Plus/Minus (BPM). There’s no Chris Paul (6th in BPM) or James Harden (8th) either. So how good is the squad headed to Rio?
How good is the 2016 U.S. Men's Olympic Basketball Team? | Box Plus/Minus (BPM), Experience, Continuity

We calculated the cumulative BPM of each of the 16 U.S. men’s national basketball teams that have featured NBA players (using each player’s BPM in the most recently completed NBA season)[10]. We also looked at each team’s experience, tallying the number of players on each team with prior participation in the Olympics, Worlds, or Americas, and the average number of NBA seasons completed by players on each team[11]. (We'll also touch on continuity, or the number of players on each team that competed together in the preceding tournament. More continuity metrics are presented in the appendix.)
United States Men's National Basketball Teams: Olympics, World Championships, FIBA Americas | Tournaments with NBA Players
The 2016 Rio team has a cumulative BPM of 41.1 and six players with prior experience at the Olympics, Worlds, or Americas. Both are nearly dead-on averages when compared with the other 15 teams of NBA players that USA basketball has sent to major competitions. Four of those players (DeMarcus Cousins, Kyrie Irving, DeMar DeRozan, and Klay Thompson) were together two years ago for the Worlds in Spain -- slightly better than average overall. 

Team USA 2016 ranks eighth out of 16 in BPM and ties for sixth in tournament experience. (And yes, viewed that way, they place slightly above the median in both categories. The median BPM across all 16 teams is 38.9 – halfway between this 2016 Olympic team and the 2007 Americas team. Their six players with prior tournament experience is one player better than the median of five.)

How do they rank among other U.S. Olympic teams since 1992? Not surprisingly, U.S. Olympic teams are typically better, more experienced, and have more continuity than U.S. teams sent to other tournaments, with an average BPM of 49.6 (2016: 41.1), 9.2 players with tournament experience (2016: 6), and 6.3 players that were together in the preceding tournament (2016: 4). Measured against those Olympic teams, the 2016 iteration is below average, ranking fifth out of seven in cumulative BPM, sixth in tournament experience, and fifth in continuity.

While that might not be very reassuring, this team is not the 2002 team that went 6-3 and finished sixth at the Worlds (as the host country, no less) or the 2004 team that went 5-3 and won bronze at the Athens Olympics. Those teams were bad and inexperienced, both in major tournament and NBA terms[12]. Hell, half of the 2004 team hadtwo or fewer seasons in the NBA; its median age was 23. The Rio roster is better and more experienced than both of those teams: 
U.S. Men's National Basketball Teams | Players with Tournament Experience versus Cumulative Box Plus/Minus (BPM) in Most Recent NBA Season
U.S. Men's National Basketball Teams | Tournaments with NBA Players | Average NBA Experience versus Cumulative Box Plus/Minus (BPM) in Most Recent NBA Season
What can we expect from this “average for a U.S. team but below average for a U.S. Olympic team” squad? And should we worry? Here’s the relationship between team BPM and average margin of victory (or loss)[13]:
United States Men's Olympic, World Championship, and FIBA Americas Teams | Tournaments with NBA Players | Average margin of victory versus Cumulative Box Plus/Minus (BPM) in Most Recent NBA Season
As you look at this chart, keep in mind that the competition at the Americas tournaments (dark gray) is inferior to that of the Worlds and Olympics (as it’s not a global tournament), and the quality of international opponents against which these U.S. teams played has almost certainly improved over time. Nevertheless – and however small the sample – there is a very strong relationship[14] between the BPM of the last six U.S. Olympic teams (in blue) and their average tournament performances.

If that blue trendline were all that mattered, we'd expect the U.S. Olympic team to win by an average of 21.2 points in Rio. But it’s not the only thing that matters, and average results don’t mean much if you beat China by 31 points in group play but lose to Greece by six in the semifinals, as the similar-in-BPM (but less experienced) 2006 team did at the World Championships in Japan.

2016 is not 1992, 1996, 2008 (with its tournament experience and continuity), or 2012, but we needn’t worry like it’s 2002 or 2004 either. That leaves the Rio team right in the “we could lose a game” space, tucked between the 2000 Olympic team – which beat Lithuania by two in the semifinals and led France by four with 4:26 left in the gold medal game – and the one-loss 2006 World Championship team. The 2012 Olympic team was better and more experienced than this one, and they were tested by Lithuania in group play (five points) and Spain in the gold medal game (seven).

If that loss comes – and it might – we’ll just have to hope it isn’t in the knockout round.
This article originally appeared on in July 2016
For additional experience and continuity metrics, please see Appendix I. To view the 1992, 2004, and 2016 Olympic rosters in detail, please see Appendix II.

[1] The United States actually voted against the measure.
[2] Through 2003 known as the Tournament of the Americas.
[3] Through 2010 known as the FIBA World Championships.
[4] It will forever be impossible to write "Team USA" and not think of Emilio Estevez and the Mighty Ducks. 
[5] The U.S. won gold with NBA players at the 2003 Americas in Puerto Rico.
[6] The Senior National Team program was initiated in 2005 and runs in quadrennia (2005-2008, 2009-2012, 2013-2016).
[7] The U.S. has not participated in the FIBA Americas Championship since 2007.
[8] Certain teams included a recent college player: Anthony Davis (2012 Olympics), Emeka Okafor (2004 Olympics), Nick Collison (2003 Americas), Jay Williams (2002 Worlds), Elton Brand (1999 Americas), Richard Hamilton (1999 Americas), Wally Szczerbiak (1999 Americas), and Christian Laettner (1992 Olympics and Americas).
[9] Tim Duncan was the fifth starter. LeBron James, Dwyane Wade, and Carmelo Anthony had just finished their rookie seasons and came off the bench.
[10] With the following exceptions: Derrick Rose (2014 Worlds) uses 2014-2015; Anthony Davis (2012 Olympics) uses 2012-2013; Emeka Okafor (2004 Olympics) uses 2004-2005; Nick Collison (2003 Americas) uses 2004-2005; Jay Williams (2002 Worlds) uses 2002-2003; Elton Brand, Richard Hamilton, Wally Szczerbiak (1999 Americas) use 1999-2000; Magic Johnson (1992 Olympics and Americas) uses 1990-1991; Christian Laettner (1992 Olympics and Americas) uses 1992-1993.
[11] Excluding seasons in which a player played fewer than twenty games.
[12] Bad and inexperienced teams haven’t always faltered – the 2010 World Championship team went undefeated and won gold.
​[13] The “average margin of victory” calculation includes both wins (positive margins) and losses (negative margins).  
[14] R equals 0.9440. Adjusted R-squared equals 0.8638. P-value equals 0.0046.​