Serbia's Novak Djokovic returns to Switzerland's Roger Federer during the men's singles final match on day eight of the ATP World Tour Finals tennis tournament in London on November 22, 2015.  AFP PHOTO / GLYN KIRK        (Photo credit should read GLYN KIRK/AFP/Getty Images)
 GLYN KIRK/AFP/Getty Images

After being crushed by Novak Djokovic 6-1, 6-2 in the Qatar Open final on Saturday, Rafael Nadal admired the Serb's handiwork.

“I played against a player who did everything perfect,” Nadal said.

“I know nobody playing tennis like this ever. Since I know this sport, I never saw somebody playing at this level."

This marked his 16th straight final — and 12th title — since he lost in the Qatar Open quarterfinals last year.