They gave Australia an unassailable 3-0 lead over Belarus in their Davis Cup quarter-final on Saturday.
Lleyton Hewitt demolished Vladimir Voltchkov after Chris Guccione upset Max Mirnyi in the Davis Cup quarter-final.
The United States swept past Belarus on Saturday to clinch their first Davis Cup final appearance since 1997.
The Australian Open champion fought off a match-point to beat Vladimir Voltchkov and book his spot in the semi-finals of the San Jose Open.
The US ace broke his record with a 155mph (249kph) serve as the U.S. took a 2-0 lead over Belarus in their Davis Cup semi-final.