Best photos from ATP World Tour Finals

Novak Djokovic is on a 22-match winning streak. (Carl Court/AFP/Getty Images) With another ATP World Tour Finals in the books, Novak Djokovic once again

Courtney Nguyen | Nov 13, 2013

Best photos from ATP World Tour Finals /

Novak Djokovic is on a 22-match winning streak. (Carl Court/AFP/Getty Images)

With another ATP World Tour Finals in the books, Novak Djokovic once again showed that when the autumn leaves start to turn, he's the man to beat.

Djokovic's hopes of finishing the year No. 1 evaporated when Rafael Nadal clinched the distinction with his victory over Stanislas Wawrinka in round-robin play at the season-ending tournament. But Djokovic didn't leave London empty-handed, defeating Nadal 6-3, 6-4 to hoist the Barclays Trophy for the second year in a row.

In the last two years, the Serb has gone 37-1 after the U.S. Open, and he has an opportunity to extend that record this weekend when Serbia meets the Czech Republic in the Davis Cup final in Belgrade.

Here are some of our favorite photos from the week in London.

Rafael Nadal (Clive Brunskill/Getty Images)

Roger Federer (Carl Court/AFP/Getty Images)

Rafael Nadal (Michael Regan/Getty Images)

David Ferrer (Glyn Kirk/AFP/Getty Images)

Juan Martin del Potro (Clive Brunskill/Getty Images)

Stanislas Wawrinka (Glyn Kirk/AFP Getty Images)

Doubles champions David Marrero (left) and Fernando Verdasco (Jan Kruger/Getty Images)

Roger Federer fans (Julian Finney/Getty Images)

Juan Martin del Potro (Clive Brunskill/Getty Images)

Roger Federer (Carl Court/AFP/Getty Images)

Novak Djokovic

Published Nov 13, 2013

COURTNEY NGUYEN

Contributor, SI.com Nguyen is a freelance writer for SI.com, providing full coverage of professional tennis both on and off the court. Her content has become a must-read for fans and insiders to stay up-to-date with a sport that rarely rests. She has appeared on radio and TV talk shows all over the world and is one of the co-hosts of No Challenges Remaining, a weekly podcast available on iTunes. Nguyen graduated from the University of California, Irvine in 1999 and received a law degree from the University of California, Davis in 2002. She lives in the Bay Area.