Very awesome achievement! So many milestones this year:
1) First time coming back from two sets down (AO rd. of 16 against Youzny)
2) First "epic" match LOL (AO QF against El Ayanoui)
3) First tournament win outside the U.S. (St. Poelten)
4) First grass tournament win (Queens)
5) First win over Agassi (Queens SF)
6) First TMS title (Montreal)
7) First win over Federer (Montreal SF)
8) First time winning over 3 titles in a season as a pro (with winning Montreal)
9) First back to back TMS wins (Montreal & Cincinnati)
10) First time being Champions Race leader (after Cincinnati)
11) FIRST GS TITLE WIN (U.S. Open)
12) Longest match winning streak of the year (19 consecutive matches, 20 tournament matches)
13) First Davis Cup match win on clay, and non-home soil (against Beck)
14) #1 IN THE WORLD!
Many more milestones to come!!!