World number six Holger Rune has partnered up with Novak Djokovic's former coach Boris Becker.
Holger Rune's difficult run hit a new nadir with a one-sided loss to Brandon Nakashima in the second round of the Shanghai Masters.
Holger Rune was left to regret tweeting a map of the US Open site to point spectators towards his first-round match.
Carlos Alcaraz and Iga Swiatek, the current world number ones, will bid to defend their US Open titles they won last year, but a host of rivals will be out to dethrone them.
Alejandro Davidovich Fokina defended his decision to deliver and ill-advised underarm serve that virtually handed victory to Holger Rune in their third-round clash at Wimbledon.
Holger Rune has admitted he is "super happy" following Danish compatriot and former world number one Caroline Wozniacki confirming her comeback to tennis.