WATCH: Djokovic withstands hot shots in Vienna

Novak Djokovic overcame some early adversity in his Vienna opener after going down 3-5 to Filip Krajinovic.

But even once Djokovic found his gear, Krajinovic continued to bring some of his best stuff—see this opposite-handed ungettable drop shot that earned a dramatic bow his opponent:

Additionally, in the first-set tiebreak, a grueling rally led to Krajinovic going for a crosscourt tweener. While it might have been successful against another player, Djokovic got to the ball and answered with a perfect volley:

Djokovic went on to win the tiebreak and outlast Krajinovic, 7-6 (6), 6-3.

This victory puts Djokovic one win away from finishing as the year-end No. 1 for a record-tying sixth time. He'll face Borna Coric on Wednesday.

"It's interesting, you ask a player, 'Would you [rather] take a Grand Slam or world No. 1?'" Kamau Murray recently said on Tennis Channel Live. "And every year Novak says, 'I'll take both.'"