DeMar DeRozan of the Toronto Raptors and Chandler Parsons, who is leaving Houston for Dallas, were among the players added to the U.S. national team roster training camp in Las Vegas next month.
Derrick Rose and four returnees from the 2012 Olympic men's basketball champions are also among the 19 players selected for the summer roster. Rose is trying to make the team after his NBA season was cut short by another knee operation.
Kevin Durant, Kevin Love, James Harden and Anthony Davis were the four holdovers announced Monday.
The rest of the roster includes: Stephen Curry and Klay Thompson (Golden State), Kyrie Irving (Cleveland), Blake Griffin (Clippers), Paul George (Indiana), Damian Lillard (Portland), Gordon Hayward (Utah), DeMarcus Cousins (Sacramento), Bradley Beal (Washington), Andre Drummond (Detroit), Kenneth Faried (Denver) and Kyle Korver (Atlanta).
The Americans previously announced a 28-player roster pool in January, though it was planned that players such as two-time Olympic champions LeBron James, Carmelo Anthony and Chris Paul would sit out this summer and perhaps come back at the 2016 Summer Games.
Also missing from the original pool is NBA Finals MVP Kawhi Leonard of San Antonio and Portland All-Star forward LaMarcus Aldridge, who was expected to play this summer.
"To maintain the continuity, we need turnover in every competition so that players who aspire to represent the USA on the national team level have a real opportunity," USA Basketball chairman Jerry Colangelo said.
"We could only offer an opportunity and then they can either accept or not," he added. "In Aldridge's case, this has happened a couple of times previously, but the bottom line is he advised us he's not available."
Colangelo said the roster could be trimmed to 15 after the camp in Las Vegas that begins July 28, with the final 12 selected before the Americans depart for the World Cup of Basketball in Spain in late August.
So the U.S. will be led by Durant, the NBA scoring champion from the Oklahoma City Thunder who was the MVP of the 2010 World Championship, which has since been renamed. Curry, Love and Rose also played on that team, the first from the U.S. to win the tournament since 1994.
But Rose has had a tough time remaining healthy since, tearing a knee ligament in the 2012 playoffs, missing the entire next season and then getting knocked out by surgery shortly after returning last season.
"We'd like to see him play like the Derrick of old, because he's one of the best players in the world, an MVP in the NBA," coach Mike Krzyzewski said during a conference call. "What we've heard is that he's in great shape."
"Hopefully this would be a launching pad for him for a great NBA season this upcoming year."
His chances of making the team were strengthened last week when Oklahoma City point guard Russell Westbrook withdrew from consideration to rest because of knee injuries.
Following the Las Vegas camp, the Americans will also train and play exhibition games in Chicago and New York before leaving for Spain.