No. 1-ranked Jannik Sinner has led defending champion Italy to a comeback victory over Argentina for a return to the Davis Cup semifinals.

Australia set up a Davis Cup semi-final clash with defending champions Italy as doubles pair Matthew Ebden and Jordan Thompson sealed victory against the United States on Thursday. Olympic champion Ebden and Thompson beat surprise pairing Tommy Paul and Ben Shelton 6-4 6-4 to put Lleyton Hewitt's side into their third successive semi-final of the men's team event.

Australia defeated record 28-time Davis Cup winners the United States in a decisive doubles rubber on Thursday to reach the semi-finals with a hard-fought 2-1 victory.Later Thursday Jannik Sinner's Italy,