Nick Kyrgios battled stiff back to stun top seed Rafael Nadal 3-6 7-6(2) 7-6(6) in the second round of the Acapulco International. World number 72 Kyrgios improved his career record against Nadal to 3-3.
Nadal, who was gunning for his third title in Acapulco, managed just one break from his 10 break point chances. In the third set tie-break, he also failed to finish the match after leading 6-3. The Australian reeled off five straight points to improve his career record against Nadal to 3-3.
Post the match, Kyrgios said that after dropping the first set, he called for the trainer and also felt sick but continued to play as he feared the media would "blow it up".
The decision proved right as he returned to the court for the second set and immediately looked a different player, running away with the tie-break to make it one set all.
After calling for the trainer again between the second and third sets due to a sore back, Kyrgios then saved five break points in the sixth game of the final set.
The deciding tiebreak saw Nadal lose his way after a great start.
Next up for Kyrgios is Swiss Stanislas Wawrinka, who defeated American Steve Johnson 7-6(5) 6-4.