The men's national basketball team of the United States won the gold medal at the 2012 Summer Olympics in London. Defending the gold medal won by the 2008 team in the previous Olympic Games, the Americans qualified for the 2012 Games after winning the 2010 FIBA World Championship. The Olympic team lost some players to injuries who might have made the team, and appeared to be short on big men. Their roster featured five players returning from the 2008 Olympic team and five others from the 2010 World Championship.

The US went undefeated but appeared vulnerable in five exhibition games. They finished the tournament with a perfect 8–0 record, defeating opponents by an average of 32 points while trailing in the fourth quarter only once. The Americans often played with a small lineup that emphasized speed, quickness, and outside shooting. The team set an Olympic single-game record with 156 points scored against Nigeria in the preliminary round. In a rematch of the 2008 finals, Team USA again defeated Spain to capture the gold.

Roster

The 2012 team consisted of returning 2008 Olympic gold medal winners small forwards LeBron James and Carmelo Anthony, point guards Chris Paul and Deron Williams, and shooting guard Kobe Bryant. It also featured 2010 World Championship winners small forwards Kevin Durant and Andre Iguodala, power forward Kevin Love, center Tyson Chandler, and point guard Russell Westbrook. Players earning All-NBA honors in the 2011–12 NBA season included Bryant, Durant, James and Paul on the first team; second-teamers Love and Westbrook; and Anthony and Chandler from the third team.

The final two Olympics roster spots were claimed by shooting guard James Harden and power forward Blake Griffin; they were chosen over shooting guard Eric Gordon, small forward Rudy Gay, and power forward Anthony Davis. Griffin then sustained a torn meniscus during practice and was replaced by Davis, the first overall pick of the 2012 NBA draft, who earlier was unable to practice during the final tryouts due to an ankle injury. Forward Lamar Odom removed himself from consideration in July before the start of training camp.

The initial 20 finalists were announced in January 2012. In addition to Griffin, others withdrew due to injury including power forwards Chris Bosh (abdomen) and LaMarcus Aldridge (torn meniscus), point guards Derrick Rose (ACL) and Chauncey Billups, shooting guard Dwyane Wade (knee), and center Dwight Howard (back surgery). Harden and Davis were added as replacements. Center Andrew Bynum declined an invitation to be added as a finalist.

The final team was built on quickness and speed. While the roster appeared to be weakened by the injuries to its inside players, Team USA executive director Jerry Colangelo believed the team was deeper, more athletic and more experienced than the 2008 gold-medal team.

Exhibition games The United States went undefeated at 5–0 in their exhibition games, but were behind early against Brazil and Spain and played a close game against Argentina.

Olympic play

The Americans went an undefeated 8–0 and averaged 116 points per game, winning by an average margin of 32.1 points—the fifth highest in US Olympic history. Team USA trailed in the fourth quarter only once, against Lithuania in the opening round. James became the leader of the team with Bryant—who would turn 34 in August 2012—stepping back. James facilitated the offense from the post and perimeter, called the defensive sets, and provided scoring when needed. After winning the gold, Team USA coach Mike Krzyzewski said James "is the best player, he is the best leader and he is as smart as anybody playing the game right now". Durant scored a United States Olympics record of 156 points in the tournament. He also made 34 three-point field goals, doubling the previous United States mark of 17; Anthony (23) also surpassed the former record. Bryant was not in peak condition early, but he played himself into shape and was a key contributor in the final three games. While Chandler was the team's only true center—Davis was thin and had no professional experience—Krzyzewski also played Love, James or Anthony as Team USA's de facto center. Love led the team with 61 rebounds (27 offensive).

Compensating for its lack of big men, the US played small ball and spread its playmakers around the three-point line and with a player penetrating and passing the ball back outside. They won with "basically five players on the perimeter," Spain coach Sergio Scariolo said. Bryant and Krzyzewski declared at the completion of the tournament that 2012 was their final Olympic appearance. They both joined Team USA after the disappointing bronze finish in the 2004 Games. Krzyzewski left with a 62–1 record and a 50-game winning streak in international play for the Americans. He joined Henry Iba as the only US coaches to lead the team to consecutive Olympic gold medals. In 2013, Team USA announced Krzyzewski would return as head coach from 2013 through 2016.

Preliminary round The US competed in Group A in the opening round. Teams played in a round-robin format with the top four teams advancing to the next round. The Americans ended group play 5–0, the only undefeated team and the group's top seed.

France

Durant scored 22 points, and James had eight assists while taking only six shots as the US won their opening game 98–71 over France. The US was never in any real trouble, but played sloppy in the beginning, missing their first six three-point attempts and being called for 18 personal fouls in the first half. Anthony and Westbrook spent the final six minutes of the half on the bench after their third personal fouls. The team led 52–36 at halftime, which expanded to 78–51 after three quarters. Krzyzewski was able to rest Bryant, James, and Durant for most of the final period, and even the 19-year-old Davis played.

Durant, Anthony, and Chandler contributed nine rebounds each, and Love finished with 14 points. Bryant, James and Durant finished the game a combined 6 for 12 on three-pointers, while the rest of the team shot 2 for 13. France's team featured six NBA players, including Tony Parker.

Tunisia

The US won in a 110–63 blowout over Tunisia, but only after Krzyzewski benched his starters—Bryant, James, Durant, Paul, and Chandler—to begin the second half. The reserves—Love, Anthony, Iguodala, Williams and Westbrook—responded with a 21–3 run to open the half, turning a 46–33 halftime lead to a 67–36 advantage. Tunisia, the consensus weakest team in the Olympics and listed by one website as 54-point underdogs, led the game 15–12 after nine minutes, and trailed only 35–30 with about minutes remaining in the first half. The Americans then scored 11 consecutive points.

Like the opening game when they missed their first six three-pointers, the US started this game an even worse 0-for-8. Colangelo said opponents' strategy was to force the Americans to shoot from outside and hope for an off night. The US made 17 of 22 on conventional field goals in the first half, while missing 10 of 12 from three-point range. This was the team's second consecutive slow start in the Olympics, following the pattern in their five earlier exhibition games. The Americans scored on a variety of dunks once the game was in hand. Anthony and Love led the team with 16 points. Six Americans scored in double figures, including Durant who had 13 points and added 10 rebounds and 5 assists.

Nigeria

The US answered critics of their slow starts and outside shooting with a 156–73 blowout of Nigeria. The Americans scored an Olympic-record 78 points in the first half en route to breaking the record for points in a game of 138, set by Brazil against Egypt in 1988. The record was broken with 4:37 left to play, and the team set US records for 3-pointers (29), field goals (59), field goal percentage (71%), and margin of victory (83).

Anthony scored 37 points in only 14 minutes of play, shooting 10 of 12 on three-pointers and breaking the US single-game scoring record in less than three quarters. He broke Stephon Marbury's record of 31 against Spain in 2004. Bryant scored 16 points, 14 in the first quarter, as the US scored 49 points in the opening period. They led 78–45 at halftime before doubling their scoring total in the second half. The Americans shot 29 of 46 on three-point attempts (63 percent). They more than doubled their previous record of 13 made, which was broken by halftime after 11 three-pointers in the first quarter alone. Krzyzewski defended the blowout, noting that he removed his stars in the second half, ordered a zone defense, and stopped allowing fast breaks in the opening period.

Lithuania

Mainly a facilitator in the first three games, James scored 9 of his 20 points in the final four minutes as the US came back to defeat Lithuania 99–94. Linas Kleiza scored 25 to lead Lithuania, which led by 84–82 with 5:50 remaining. The US took a three-point lead, but Lithuania pulled within 87–86 with 4:12 in the game. James followed with a three-pointer and a dunk. Entering the contest, James was averaging just 6.7 points but with 5.7 assists.

Anthony added 20 points, and Paul contributed seven rebounds, six assists and four of the Americans' 17 steals. The US made only 10 of 33 attempts on three-point attempts and too often settled for outside shots. Lithuania outrebounded the US 42–37 and shot an impressive 58 percent from the field. The Americans struggled to defend Lithuania's high pick-and-roll. However, the US team's deep bench wore Lithuania down in the final period, forcing several turnovers to determine the outcome in the final minutes. Winning their first three games by an average of 52.2 points and playing so well, the team had canceled their previous two practices and rested while watching other sports instead.

Argentina

Durant scored 17 of his 28 points in the third quarter as the US turned a one-point game into a 126–97 blowout over Argentina. The US led just 60–59 at halftime, when Durant matched Argentina's point total during a 42-point third quarter explosion by the Americans. James scored the first seven in the quarter before Durant took over and shot 5 of 6 from three-point range. He finished 8 of 10 from three-point range, and the team was 20 of 39. James had 18 points in the game, and Paul added 17.

The US allowed Argentina to make 11 of its first 15 shots, and the Americans lead was never bigger than six in the second quarter. Argentina's Luis Scola did not play in the second period, and starting point guard Pablo Prigioni sat the entire game. They rested their starters in the fourth quarter in preparation for their quarterfinal meeting against Brazil, and a possible rematch against the Americans in the semifinals. Manu Ginóbili led the Argentines with 16 points, all in the first half. The US finished the first round as the top seed in their group and the only team undefeated in group play. An American loss by at least 13 points would have placed Argentina instead into the top spot from Group A.

Knockout round

The single-elimination round features the top four teams from each of the two groups from the opening round.

Quarterfinal – Australia

Bryant made six straight three-pointers in the second half and James finished with the first triple-double in US Olympic history. The Americans surrendered 11 consecutive points to start the second half. The US was leading by six when Bryant, who shot 0 for 3 in the first half, made consecutive threes to give his team a 70–58 lead. He scored all of his 20 points in the second half, including four consecutive three-pointers in a 66-second span. He entered the game averaging only 9.4 points.

James finished with 11 points, 14 rebounds and 11 assists, and he almost had a triple-double by halftime (seven points, 10 rebounds, and six assists). Love added 10 points and 11 rebounds (eight offensive), Anthony scored 17, and Durant had 14.

Semifinal – Argentina