New York, NY, USA, 31 August 2017 | AAP

John Millman is Australia’s last man standing at the US Open after Jordan Thompson exited the tournament with a sapping five-set second-round loss.

Thompson was unable to back up his first-round upset of 13th seed Jack Sock, blowing an early fifth-set lead in a 2-6 6-2 3-6 6-4 6-2 loss to Thomas Fabbiano.

Thompson’s exit follows Davis Cup teammate Nick Kyrgios’ shock 6-3 1-6 6-4 6-1 loss to Millman earlier on Thursday, leaving the pair with two weeks to rebound before Australia’s semifinal against Belgium in Brussels.