The Swedish and U.S. teams, both 2-0 in round-robin play, will advance from the tournament's Red Group, but all four Blue Group teams are 1-1. The two semifinalists from that group won't be decided until the final series of round-robin matches beginning Thursday.
Wayne Odesnik and Bobby Reynolds teamed to give the United States a 6-3, 6-7 (5-7), 10-7 doubles victory over Argentines Lucas Arnold and Sebastian Prieto to win the best-of-three series. That decision eliminated the defending champion Argentine team from the competition.
Sweden Wednesday wrapped up a 3-0 sweep of the Czech Republic to secure its semifinal slot.
Thursday's Blue Group round-robin play includes matches pitting the host Germans against Russia and the Italian team against Spain.