Stan Wawrinka defeated Rafael Nadal 6-3, 6-2, 3-6, 6-3 to win the 2014 Australian Open title.
Wawrinka had never taken a set off Nadal in 12 previous meetings, but attacked from the start and regained his nerve after dropping the third set against the injured Spaniard.
Nadal appeared to be on the verge of retiring in the second set, when he hurt his back and needed a medical time out, but he refused to quit.
"It's really not the way you want to win a tennis match, but in a Grand Slam final I'll take it," said Wawrinka.
"'Rafa, I'm really sorry for you, I hope your back is going to be fine, you're a really great guy, good friend and really amazing champion," Wawrinka said as he accepted his first major trophy. "Last year I had a crazy match, I lost it. I was crying a lot after the match. But in one year a lot happened - I still don't know if I'm dreaming or not but we'll see tomorrow morning."
Wawrinka lost in five sets to Novak Djokovic in the fourth round of the 2013 Australian Open, in the longest Grand Slam match of the season. Djokovic went on to win his third consecutive title at Melbourne Park, and then beat Wawrinka again in five sets in the U.S. Open semifinals.