She won six consecutive games to escape with a 3-6 6-2 7-5 win in a match lasting 2hr 14mins on Rod Laver Arena to book her place in the third round.
"I think it's the matter of the umpire to say, If you want to grunt, grunt, but there's also a limit to everything". "The most important for me, it's to fight, give my best on court until the last point".
Playing with her her highest seeding at a major since being top seed at 2012 Australian Open, the Dane came back from the brink to avoid a fifth defeat at a major to opponents ranked outside Top 100 after losing to No.187 Dokic (2009 Australian Open), No.196 Cetkovska (2013 Wimbledon), No.136 Giorgi (2013 US Open) and No.149 Cetkovska (2015 US Open). "She had nothing to lose".
Wozniacki reeled off 10 points in a row from two match points down to ignite her recovery.
The 21-year-old Croatian found herself 5-1 up in the deciding set before Wozniacki rallied and eventually won the decider 7-5. She served a great serve down the T. It was just slightly out.
Wozniacki had returned Down Under on the back of her biggest career title at the season-ending WTA Finals in Singapore, where she took down four of the top five women, including Venus Williams in the final.
"What are you talking about?" I had to hit some great shots in the tie-break.
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Experience and resilience are unquestionably two of the most valuable commodities when it comes to winning grand slam matches and when the pressure mounted for the second seed Caroline Wozniacki, she possessed both in abundance to stage the best fightback of her career.
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Things will get harder for her now, against fellow Ukrainian and No. 4-seeded Elina Svitolina, who had a 4-6, 6-2, 6-1 win over Katerina Siniakova.
Another of Tsonga's array of shots during the final set included one from between his legs for a victor. "It's a sport", said the 18-year-old Canadian.
"I'm happy to be in the third round".
"I didn't feel like she was 15 at all", said Rogowska. They go for everything.
"I haven't really had time to talk to anyone (smiling)".
The athletic Shapovalov, often compared with a younger Tsonga, had a few great moments of his own, including a shot around the net from the baseline for a victor.
"There's always nerves in a tennis match".
"I think it's different if someone has the same grunt". "He played an unbelievable game". Then he picked up his level.
"I kept my head down and was fighting for every point".
No. 19 Magdalena Rybarikova beat Kirsten Flipkens 6-4, 0-6, 6-2.