The USA men's junior national water polo team finished pool play at the FINA Junior World Championships with a 10-6 setback to Serbia Tuesday at N.Ionias Indoor Swimming Pool in Volos, Greece.
The Americans (2-1) beat Mexico, 17-4, the previous day as Stanford's Alex Bowen scored twice and Sacred Heart Prep grad Paul Rudolph also scored.
Josh Samuels led the U.S. with three goals in the loss to Serbia.
Spain, which beat the Americans, 7-4, earlier in the week, won the group by beating Serbia on Wednesday.
Team USA, which has never finished higher than fourth in the event, will meet Australia in the quarterfinals of the tournament on Thursday.
Stanford's Nick Hoversten also plays for the national team.
Team USA recovered from a difficult first-set loss to defeat Cuba, 24-26, 25-23, 25-23, 25-17, on Wednesday at the 2011 Men's NORCECA Continental Championship in Mayaguez, Puerto Rico.
Stanford grad Kevin Hansen had 21 assists in the match and was credited with two points on a block and ace.
The United States (3-0) wins Group B and will have Thursday off while the quarterfinals are played. It will play again in Friday's semifinals.
"Both teams are competing this summer and the next to qualify for the Olympics head-to-head and we both tried to win tonight," American Clay Stanley said. "It is a lesson for us to know how to close a set as the Cubans do."
Matt Anderson led all scorers with 23 points.
Cuba scored 11 consecutive points in the first set to overcome a 24-15 deficit.