The mixed doubles format, featuring a lineup of singles superstars, has generated significant media buzz for the US Open, but also raised doubts about its sporting integrity.
Starting the season outside the world's top 300, Victoria Mboko defeated three former Grand Slam champions to reach the final of the WTA 1000 tournament in Montreal.
In an effort to secure his first Grand Slam title before his peak years pass, world number three Alexander Zverev has decided to collaborate with veteran coach Toni Nadal.
