On Day 2 in Vienna, Novak Djokovic pulled out another tight two-set win, this time over Borna Coric, 7-6 (11), 6-3. By moving into the quarterfinals, Djokovic all but secured his year-end No. 1 ranking for the record-tying sixth time. Unless Rafael Nadal plays Sofia and a few more results go the Spaniard's way, Djokovic will pull even with Pete Sampras.

These are the Top 5 Photos from his achievement on Wednesday.

1

Saving Set Points

Top 5 Photos 10/28: 
Djokovic moves on 
in Vienna

Top 5 Photos 10/28: Djokovic moves on in Vienna

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2

Fans Showed Up for History

Top 5 Photos 10/28: 
Djokovic moves on 
in Vienna

Top 5 Photos 10/28: Djokovic moves on in Vienna

3

A Focused Djokovic

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Top 5 Photos 10/28: 
Djokovic moves on 
in Vienna

Top 5 Photos 10/28: Djokovic moves on in Vienna

4

Nothing But Love

Top 5 Photos 10/28: 
Djokovic moves on 
in Vienna

Top 5 Photos 10/28: Djokovic moves on in Vienna

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5

Safety First

Top 5 Photos 10/28: 
Djokovic moves on 
in Vienna

Top 5 Photos 10/28: Djokovic moves on in Vienna