The Scot is confident after putting in the hard yards and surviving three epic battles in Australia in January.
A breakout success in Melbourne has left the 24-year-old hungry for the biggest challenges.
The American leads a pack of 11 Top-50 players from Team USA.
The German is hoping to steadily improve as the season progresses.
The 20-year-old American is provisionally suspended for a doping violation.
There is an asterisk, however, as the Pole only played three matches.
Novak Djokovic continues to ascend rare rankings air.
